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@@ -1,593 +1,603 b'' | |||||
1 | //---------------------------------------------------------------------------- |
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1 | //---------------------------------------------------------------------------- | |
2 | // Copyright (C) 2013 The IPython Development Team |
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2 | // Copyright (C) 2013 The IPython Development Team | |
3 | // |
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3 | // | |
4 | // Distributed under the terms of the BSD License. The full license is in |
|
4 | // Distributed under the terms of the BSD License. The full license is in | |
5 | // the file COPYING, distributed as part of this software. |
|
5 | // the file COPYING, distributed as part of this software. | |
6 | //---------------------------------------------------------------------------- |
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6 | //---------------------------------------------------------------------------- | |
7 |
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7 | |||
8 | //============================================================================ |
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8 | //============================================================================ | |
9 | // WidgetModel, WidgetView, and WidgetManager |
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9 | // WidgetModel, WidgetView, and WidgetManager | |
10 | //============================================================================ |
|
10 | //============================================================================ | |
11 | /** |
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11 | /** | |
12 | * Base Widget classes |
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12 | * Base Widget classes | |
13 | * @module IPython |
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13 | * @module IPython | |
14 | * @namespace IPython |
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14 | * @namespace IPython | |
15 | * @submodule widget |
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15 | * @submodule widget | |
16 | */ |
|
16 | */ | |
17 |
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17 | |||
18 | "use strict"; |
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18 | "use strict"; | |
19 |
|
19 | |||
20 | // Use require.js 'define' method so that require.js is intelligent enough to |
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20 | // Use require.js 'define' method so that require.js is intelligent enough to | |
21 | // syncronously load everything within this file when it is being 'required' |
|
21 | // syncronously load everything within this file when it is being 'required' | |
22 | // elsewhere. |
|
22 | // elsewhere. | |
23 | define(["components/underscore/underscore-min", |
|
23 | define(["components/underscore/underscore-min", | |
24 | "components/backbone/backbone-min", |
|
24 | "components/backbone/backbone-min", | |
25 | ], function(underscore, backbone){ |
|
25 | ], function(underscore, backbone){ | |
26 |
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26 | |||
27 |
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27 | |||
28 | //-------------------------------------------------------------------- |
|
28 | //-------------------------------------------------------------------- | |
29 | // WidgetModel class |
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29 | // WidgetModel class | |
30 | //-------------------------------------------------------------------- |
|
30 | //-------------------------------------------------------------------- | |
31 | var WidgetModel = Backbone.Model.extend({ |
|
31 | var WidgetModel = Backbone.Model.extend({ | |
32 | constructor: function(comm_manager, comm, widget_manager) { |
|
32 | constructor: function(comm_manager, comm, widget_manager) { | |
33 | this.comm_manager = comm_manager; |
|
33 | this.comm_manager = comm_manager; | |
34 | this.widget_manager = widget_manager; |
|
34 | this.widget_manager = widget_manager; | |
35 | this.pending_msgs = 0; |
|
35 | this.pending_msgs = 0; | |
36 | this.msg_throttle = 3; |
|
36 | this.msg_throttle = 3; | |
37 | this.msg_buffer = null; |
|
37 | this.msg_buffer = null; | |
38 | this.views = {}; |
|
38 | this.views = {}; | |
39 |
|
39 | |||
40 | // Remember comm associated with the model. |
|
40 | // Remember comm associated with the model. | |
41 | this.comm = comm; |
|
41 | this.comm = comm; | |
42 | comm.model = this; |
|
42 | comm.model = this; | |
43 |
|
43 | |||
44 | // Hook comm messages up to model. |
|
44 | // Hook comm messages up to model. | |
45 | comm.on_close($.proxy(this._handle_comm_closed, this)); |
|
45 | comm.on_close($.proxy(this._handle_comm_closed, this)); | |
46 | comm.on_msg($.proxy(this._handle_comm_msg, this)); |
|
46 | comm.on_msg($.proxy(this._handle_comm_msg, this)); | |
47 |
|
47 | |||
48 | return Backbone.Model.apply(this); |
|
48 | return Backbone.Model.apply(this); | |
49 | }, |
|
49 | }, | |
50 |
|
50 | |||
51 |
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51 | |||
52 | update_other_views: function(caller) { |
|
52 | update_other_views: function(caller) { | |
53 | this.last_modified_view = caller; |
|
53 | this.last_modified_view = caller; | |
54 | this.save(this.changedAttributes(), {patch: true}); |
|
54 | this.save(this.changedAttributes(), {patch: true}); | |
55 |
|
55 | |||
56 | for (var cell in this.views) { |
|
56 | for (var cell in this.views) { | |
57 | var views = this.views[cell]; |
|
57 | var views = this.views[cell]; | |
58 | for (var view_index in views) { |
|
58 | for (var view_index in views) { | |
59 | var view = views[view_index]; |
|
59 | var view = views[view_index]; | |
60 | if (view !== caller) { |
|
60 | if (view !== caller) { | |
61 | view.update(); |
|
61 | view.update(); | |
62 | } |
|
62 | } | |
63 | } |
|
63 | } | |
64 | } |
|
64 | } | |
65 | }, |
|
65 | }, | |
66 |
|
66 | |||
67 | send: function(content) { |
|
67 | send: function(content) { | |
68 |
|
68 | |||
69 | // Used the last modified view as the sender of the message. This |
|
69 | // Used the last modified view as the sender of the message. This | |
70 | // will insure that any python code triggered by the sent message |
|
70 | // will insure that any python code triggered by the sent message | |
71 | // can create and display widgets and output. |
|
71 | // can create and display widgets and output. | |
72 | var cell = null; |
|
72 | var cell = null; | |
73 | if (this.last_modified_view != undefined && |
|
73 | if (this.last_modified_view != undefined && | |
74 | this.last_modified_view.cell != undefined) { |
|
74 | this.last_modified_view.cell != undefined) { | |
75 | cell = this.last_modified_view.cell; |
|
75 | cell = this.last_modified_view.cell; | |
76 | } |
|
76 | } | |
77 | var callbacks = this._make_callbacks(cell); |
|
77 | var callbacks = this._make_callbacks(cell); | |
78 | var data = {custom_content: content}; |
|
78 | var data = {custom_content: content}; | |
79 | this.comm.send(data, callbacks); |
|
79 | this.comm.send(data, callbacks); | |
80 | }, |
|
80 | }, | |
81 |
|
81 | |||
82 |
|
82 | |||
83 | on_view_displayed: function (callback) { |
|
83 | on_view_displayed: function (callback) { | |
84 | this._view_displayed_callback = callback; |
|
84 | this._view_displayed_callback = callback; | |
85 | }, |
|
85 | }, | |
86 |
|
86 | |||
87 |
|
87 | |||
88 | on_close: function (callback) { |
|
88 | on_close: function (callback) { | |
89 | this._close_callback = callback; |
|
89 | this._close_callback = callback; | |
90 | }, |
|
90 | }, | |
91 |
|
91 | |||
92 |
|
92 | |||
93 | on_msg: function (callback) { |
|
93 | on_msg: function (callback) { | |
94 | this._msg_callback = callback; |
|
94 | this._msg_callback = callback; | |
95 | }, |
|
95 | }, | |
96 |
|
96 | |||
97 |
|
97 | |||
98 | _handle_custom_msg: function (content) { |
|
98 | _handle_custom_msg: function (content) { | |
99 | if (this._msg_callback) { |
|
99 | if (this._msg_callback) { | |
100 | try { |
|
100 | try { | |
101 | this._msg_callback(content); |
|
101 | this._msg_callback(content); | |
102 | } catch (e) { |
|
102 | } catch (e) { | |
103 | console.log("Exception in widget model msg callback", e, content); |
|
103 | console.log("Exception in widget model msg callback", e, content); | |
104 | } |
|
104 | } | |
105 | } |
|
105 | } | |
106 | }, |
|
106 | }, | |
107 |
|
107 | |||
108 |
|
108 | |||
109 | // Handle when a widget is closed. |
|
109 | // Handle when a widget is closed. | |
110 | _handle_comm_closed: function (msg) { |
|
110 | _handle_comm_closed: function (msg) { | |
111 | for (var cell in this.views) { |
|
111 | this._execute_views_method('remove'); | |
112 | var views = this.views[cell]; |
|
|||
113 | for (var view_index in views) { |
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|||
114 | var view = views[view_index]; |
|
|||
115 | view.remove(); |
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|||
116 | } |
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|||
117 | } |
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|||
118 | delete this.comm.model; // Delete ref so GC will collect widget model. |
|
112 | delete this.comm.model; // Delete ref so GC will collect widget model. | |
119 | }, |
|
113 | }, | |
120 |
|
114 | |||
121 |
|
115 | |||
122 | // Handle incomming comm msg. |
|
116 | // Handle incomming comm msg. | |
123 | _handle_comm_msg: function (msg) { |
|
117 | _handle_comm_msg: function (msg) { | |
124 | var method = msg.content.data.method; |
|
118 | var method = msg.content.data.method; | |
125 | switch (method){ |
|
119 | switch (method){ | |
126 | case 'display': |
|
120 | case 'display': | |
127 |
|
121 | |||
128 | // Try to get the cell. |
|
122 | // Try to get the cell. | |
129 | var cell = this._get_msg_cell(msg.parent_header.msg_id); |
|
123 | var cell = this._get_msg_cell(msg.parent_header.msg_id); | |
130 | if (cell == null) { |
|
124 | if (cell == null) { | |
131 | console.log("Could not determine where the display" + |
|
125 | console.log("Could not determine where the display" + | |
132 | " message was from. Widget will not be displayed") |
|
126 | " message was from. Widget will not be displayed") | |
133 | } else { |
|
127 | } else { | |
134 | this._display_view(msg.content.data.view_name, |
|
128 | this._display_view(msg.content.data.view_name, | |
135 | msg.content.data.parent, |
|
129 | msg.content.data.parent, | |
136 | cell); |
|
130 | cell); | |
137 | } |
|
131 | } | |
138 | break; |
|
132 | break; | |
139 | case 'update': |
|
133 | case 'update': | |
140 | this._handle_update(msg.content.data.state); |
|
134 | this._handle_update(msg.content.data.state); | |
141 | break; |
|
135 | break; | |
|
136 | case 'add_class': | |||
|
137 | case 'remove_class': | |||
|
138 | var selector = msg.content.data.selector; | |||
|
139 | var class_list = msg.content.data.class_list; | |||
|
140 | this._execute_views_method(method, selector, class_list); | |||
|
141 | break; | |||
142 | case 'custom': |
|
142 | case 'custom': | |
143 | this._handle_custom_msg(msg.content.data.custom_content); |
|
143 | this._handle_custom_msg(msg.content.data.custom_content); | |
144 | break; |
|
144 | break; | |
145 | } |
|
145 | } | |
146 | }, |
|
146 | }, | |
147 |
|
147 | |||
148 |
|
148 | |||
149 | // Handle when a widget is updated via the python side. |
|
149 | // Handle when a widget is updated via the python side. | |
150 | _handle_update: function (state) { |
|
150 | _handle_update: function (state) { | |
151 | this.updating = true; |
|
151 | this.updating = true; | |
152 | try { |
|
152 | try { | |
153 | for (var key in state) { |
|
153 | for (var key in state) { | |
154 | if (state.hasOwnProperty(key)) { |
|
154 | if (state.hasOwnProperty(key)) { | |
155 | if (key == "_css"){ |
|
155 | if (key == "_css"){ | |
156 |
|
156 | |||
157 | // Set the css value of the model as an attribute |
|
157 | // Set the css value of the model as an attribute | |
158 | // instead of a backbone trait because we are only |
|
158 | // instead of a backbone trait because we are only | |
159 | // interested in backend css -> frontend css. In |
|
159 | // interested in backend css -> frontend css. In | |
160 | // other words, if the css dict changes in the |
|
160 | // other words, if the css dict changes in the | |
161 | // frontend, we don't need to push the changes to |
|
161 | // frontend, we don't need to push the changes to | |
162 | // the backend. |
|
162 | // the backend. | |
163 | this.css = state[key]; |
|
163 | this.css = state[key]; | |
164 | } else { |
|
164 | } else { | |
165 | this.set(key, state[key]); |
|
165 | this.set(key, state[key]); | |
166 | } |
|
166 | } | |
167 | } |
|
167 | } | |
168 | } |
|
168 | } | |
169 | this.id = this.comm.comm_id; |
|
169 | this.id = this.comm.comm_id; | |
170 | this.save(); |
|
170 | this.save(); | |
171 | } finally { |
|
171 | } finally { | |
172 | this.updating = false; |
|
172 | this.updating = false; | |
173 | } |
|
173 | } | |
174 | }, |
|
174 | }, | |
175 |
|
175 | |||
176 |
|
176 | |||
177 | _handle_status: function (cell, msg) { |
|
177 | _handle_status: function (cell, msg) { | |
178 | //execution_state : ('busy', 'idle', 'starting') |
|
178 | //execution_state : ('busy', 'idle', 'starting') | |
179 | if (msg.content.execution_state=='idle') { |
|
179 | if (msg.content.execution_state=='idle') { | |
180 |
|
180 | |||
181 | // Send buffer if this message caused another message to be |
|
181 | // Send buffer if this message caused another message to be | |
182 | // throttled. |
|
182 | // throttled. | |
183 | if (this.msg_buffer != null && |
|
183 | if (this.msg_buffer != null && | |
184 | this.msg_throttle == this.pending_msgs) { |
|
184 | this.msg_throttle == this.pending_msgs) { | |
185 |
|
185 | |||
186 | var cell = this._get_msg_cell(msg.parent_header.msg_id); |
|
186 | var cell = this._get_msg_cell(msg.parent_header.msg_id); | |
187 | var callbacks = this._make_callbacks(cell); |
|
187 | var callbacks = this._make_callbacks(cell); | |
188 | var data = {sync_method: 'update', sync_data: this.msg_buffer}; |
|
188 | var data = {sync_method: 'update', sync_data: this.msg_buffer}; | |
189 | this.comm.send(data, callbacks); |
|
189 | this.comm.send(data, callbacks); | |
190 | this.msg_buffer = null; |
|
190 | this.msg_buffer = null; | |
191 | } else { |
|
191 | } else { | |
192 |
|
192 | |||
193 | // Only decrease the pending message count if the buffer |
|
193 | // Only decrease the pending message count if the buffer | |
194 | // doesn't get flushed (sent). |
|
194 | // doesn't get flushed (sent). | |
195 | --this.pending_msgs; |
|
195 | --this.pending_msgs; | |
196 | } |
|
196 | } | |
197 | } |
|
197 | } | |
198 | }, |
|
198 | }, | |
199 |
|
199 | |||
200 |
|
200 | |||
201 | // Custom syncronization logic. |
|
201 | // Custom syncronization logic. | |
202 | _handle_sync: function (method, options) { |
|
202 | _handle_sync: function (method, options) { | |
203 | var model_json = this.toJSON(); |
|
203 | var model_json = this.toJSON(); | |
204 |
|
204 | |||
205 | // Only send updated state if the state hasn't been changed |
|
205 | // Only send updated state if the state hasn't been changed | |
206 | // during an update. |
|
206 | // during an update. | |
207 | if (!this.updating) { |
|
207 | if (!this.updating) { | |
208 | if (this.pending_msgs >= this.msg_throttle) { |
|
208 | if (this.pending_msgs >= this.msg_throttle) { | |
209 | // The throttle has been exceeded, buffer the current msg so |
|
209 | // The throttle has been exceeded, buffer the current msg so | |
210 | // it can be sent once the kernel has finished processing |
|
210 | // it can be sent once the kernel has finished processing | |
211 | // some of the existing messages. |
|
211 | // some of the existing messages. | |
212 | if (method=='patch') { |
|
212 | if (method=='patch') { | |
213 | if (this.msg_buffer == null) { |
|
213 | if (this.msg_buffer == null) { | |
214 | this.msg_buffer = $.extend({}, model_json); // Copy |
|
214 | this.msg_buffer = $.extend({}, model_json); // Copy | |
215 | } |
|
215 | } | |
216 | for (var attr in options.attrs) { |
|
216 | for (var attr in options.attrs) { | |
217 | this.msg_buffer[attr] = options.attrs[attr]; |
|
217 | this.msg_buffer[attr] = options.attrs[attr]; | |
218 | } |
|
218 | } | |
219 | } else { |
|
219 | } else { | |
220 | this.msg_buffer = $.extend({}, model_json); // Copy |
|
220 | this.msg_buffer = $.extend({}, model_json); // Copy | |
221 | } |
|
221 | } | |
222 |
|
222 | |||
223 | } else { |
|
223 | } else { | |
224 | // We haven't exceeded the throttle, send the message like |
|
224 | // We haven't exceeded the throttle, send the message like | |
225 | // normal. If this is a patch operation, just send the |
|
225 | // normal. If this is a patch operation, just send the | |
226 | // changes. |
|
226 | // changes. | |
227 | var send_json = model_json; |
|
227 | var send_json = model_json; | |
228 | if (method=='patch') { |
|
228 | if (method=='patch') { | |
229 | send_json = {}; |
|
229 | send_json = {}; | |
230 | for (var attr in options.attrs) { |
|
230 | for (var attr in options.attrs) { | |
231 | send_json[attr] = options.attrs[attr]; |
|
231 | send_json[attr] = options.attrs[attr]; | |
232 | } |
|
232 | } | |
233 | } |
|
233 | } | |
234 |
|
234 | |||
235 | var data = {sync_method: method, sync_data: send_json}; |
|
235 | var data = {sync_method: method, sync_data: send_json}; | |
236 |
|
236 | |||
237 | var cell = null; |
|
237 | var cell = null; | |
238 | if (this.last_modified_view != undefined && this.last_modified_view != null) { |
|
238 | if (this.last_modified_view != undefined && this.last_modified_view != null) { | |
239 | cell = this.last_modified_view.cell; |
|
239 | cell = this.last_modified_view.cell; | |
240 | } |
|
240 | } | |
241 |
|
241 | |||
242 | var callbacks = this._make_callbacks(cell); |
|
242 | var callbacks = this._make_callbacks(cell); | |
243 | this.comm.send(data, callbacks); |
|
243 | this.comm.send(data, callbacks); | |
244 | this.pending_msgs++; |
|
244 | this.pending_msgs++; | |
245 | } |
|
245 | } | |
246 | } |
|
246 | } | |
247 |
|
247 | |||
248 | // Since the comm is a one-way communication, assume the message |
|
248 | // Since the comm is a one-way communication, assume the message | |
249 | // arrived. |
|
249 | // arrived. | |
250 | return model_json; |
|
250 | return model_json; | |
251 | }, |
|
251 | }, | |
252 |
|
252 | |||
253 |
|
253 | |||
254 | _handle_view_displayed: function(view) { |
|
254 | _handle_view_displayed: function(view) { | |
255 | if (this._view_displayed_callback) { |
|
255 | if (this._view_displayed_callback) { | |
256 | try { |
|
256 | try { | |
257 | this._view_displayed_callback(view) |
|
257 | this._view_displayed_callback(view) | |
258 | } catch (e) { |
|
258 | } catch (e) { | |
259 | console.log("Exception in widget model view displayed callback", e, view, this); |
|
259 | console.log("Exception in widget model view displayed callback", e, view, this); | |
260 | } |
|
260 | } | |
261 | } |
|
261 | } | |
262 | }, |
|
262 | }, | |
263 |
|
263 | |||
264 |
|
264 | |||
|
265 | _execute_views_method: function (/* method_name, [argument0], [argument1], [...] */) { | |||
|
266 | var method_name = arguments[0]; | |||
|
267 | var args = null; | |||
|
268 | if (arguments.length > 1) { | |||
|
269 | args = [].splice.call(arguments,1); | |||
|
270 | } | |||
|
271 | ||||
|
272 | for (var cell in this.views) { | |||
|
273 | var views = this.views[cell]; | |||
|
274 | for (var view_index in views) { | |||
|
275 | var view = views[view_index]; | |||
|
276 | var method = view[method_name]; | |||
|
277 | if (args === null) { | |||
|
278 | method.apply(view); | |||
|
279 | } else { | |||
|
280 | method.apply(view, args); | |||
|
281 | } | |||
|
282 | } | |||
|
283 | } | |||
|
284 | }, | |||
|
285 | ||||
|
286 | ||||
265 | // Create view that represents the model. |
|
287 | // Create view that represents the model. | |
266 | _display_view: function (view_name, parent_comm_id, cell) { |
|
288 | _display_view: function (view_name, parent_comm_id, cell) { | |
267 | var new_views = []; |
|
289 | var new_views = []; | |
268 |
|
290 | |||
269 | // Try creating and adding the view to it's parent. |
|
291 | // Try creating and adding the view to it's parent. | |
270 | var displayed = false; |
|
292 | var displayed = false; | |
271 | if (parent_comm_id != undefined) { |
|
293 | if (parent_comm_id != undefined) { | |
272 | var parent_comm = this.comm_manager.comms[parent_comm_id]; |
|
294 | var parent_comm = this.comm_manager.comms[parent_comm_id]; | |
273 | var parent_model = parent_comm.model; |
|
295 | var parent_model = parent_comm.model; | |
274 | var parent_views = parent_model.views[cell]; |
|
296 | var parent_views = parent_model.views[cell]; | |
275 | for (var parent_view_index in parent_views) { |
|
297 | for (var parent_view_index in parent_views) { | |
276 | var parent_view = parent_views[parent_view_index]; |
|
298 | var parent_view = parent_views[parent_view_index]; | |
277 | if (parent_view.display_child != undefined) { |
|
299 | if (parent_view.display_child != undefined) { | |
278 | var view = this._create_view(view_name, cell); |
|
300 | var view = this._create_view(view_name, cell); | |
279 | if (view != null) { |
|
301 | if (view != null) { | |
280 | new_views.push(view); |
|
302 | new_views.push(view); | |
281 | parent_view.display_child(view); |
|
303 | parent_view.display_child(view); | |
282 | displayed = true; |
|
304 | displayed = true; | |
283 | this._handle_view_displayed(view); |
|
305 | this._handle_view_displayed(view); | |
284 | } |
|
306 | } | |
285 | } |
|
307 | } | |
286 | } |
|
308 | } | |
287 | } |
|
309 | } | |
288 |
|
310 | |||
289 | // If no parent view is defined or exists. Add the view's |
|
311 | // If no parent view is defined or exists. Add the view's | |
290 | // element to cell's widget div. |
|
312 | // element to cell's widget div. | |
291 | if (!displayed) { |
|
313 | if (!displayed) { | |
292 | var view = this._create_view(view_name, cell); |
|
314 | var view = this._create_view(view_name, cell); | |
293 | if (view != null) { |
|
315 | if (view != null) { | |
294 | new_views.push(view); |
|
316 | new_views.push(view); | |
295 |
|
317 | |||
296 | if (cell.widget_subarea != undefined && cell.widget_subarea != null) { |
|
318 | if (cell.widget_subarea != undefined && cell.widget_subarea != null) { | |
297 | cell.widget_area.show(); |
|
319 | cell.widget_area.show(); | |
298 | cell.widget_subarea.append(view.$el); |
|
320 | cell.widget_subarea.append(view.$el); | |
299 | this._handle_view_displayed(view); |
|
321 | this._handle_view_displayed(view); | |
300 | } |
|
322 | } | |
301 | } |
|
323 | } | |
302 | } |
|
324 | } | |
303 |
|
325 | |||
304 | // Force the new view(s) to update their selves |
|
326 | // Force the new view(s) to update their selves | |
305 | for (var view_index in new_views) { |
|
327 | for (var view_index in new_views) { | |
306 | var view = new_views[view_index]; |
|
328 | var view = new_views[view_index]; | |
307 | view.update(); |
|
329 | view.update(); | |
308 | } |
|
330 | } | |
309 | }, |
|
331 | }, | |
310 |
|
332 | |||
311 |
|
333 | |||
312 | // Create a view |
|
334 | // Create a view | |
313 | _create_view: function (view_name, cell) { |
|
335 | _create_view: function (view_name, cell) { | |
314 | var view_type = this.widget_manager.widget_view_types[view_name]; |
|
336 | var view_type = this.widget_manager.widget_view_types[view_name]; | |
315 | if (view_type != undefined && view_type != null) { |
|
337 | if (view_type != undefined && view_type != null) { | |
316 | var view = new view_type({model: this}); |
|
338 | var view = new view_type({model: this}); | |
317 | view.render(); |
|
339 | view.render(); | |
318 | if (this.views[cell]==undefined) { |
|
340 | if (this.views[cell]==undefined) { | |
319 | this.views[cell] = [] |
|
341 | this.views[cell] = [] | |
320 | } |
|
342 | } | |
321 | this.views[cell].push(view); |
|
343 | this.views[cell].push(view); | |
322 | view.cell = cell; |
|
344 | view.cell = cell; | |
323 |
|
345 | |||
324 | // Handle when the view element is remove from the page. |
|
346 | // Handle when the view element is remove from the page. | |
325 | var that = this; |
|
347 | var that = this; | |
326 | view.$el.on("remove", function(){ |
|
348 | view.$el.on("remove", function(){ | |
327 | var index = that.views[cell].indexOf(view); |
|
349 | var index = that.views[cell].indexOf(view); | |
328 | if (index > -1) { |
|
350 | if (index > -1) { | |
329 | that.views[cell].splice(index, 1); |
|
351 | that.views[cell].splice(index, 1); | |
330 | } |
|
352 | } | |
331 | view.remove(); // Clean-up view |
|
353 | view.remove(); // Clean-up view | |
332 | if (that.views[cell].length()==0) { |
|
354 | if (that.views[cell].length()==0) { | |
333 | delete that.views[cell]; |
|
355 | delete that.views[cell]; | |
334 | } |
|
356 | } | |
335 |
|
357 | |||
336 | // Close the comm if there are no views left. |
|
358 | // Close the comm if there are no views left. | |
337 | if (that.views.length()==0) { |
|
359 | if (that.views.length()==0) { | |
338 | if (that._close_callback) { |
|
360 | if (that._close_callback) { | |
339 | try { |
|
361 | try { | |
340 | that._close_callback(that) |
|
362 | that._close_callback(that) | |
341 | } catch (e) { |
|
363 | } catch (e) { | |
342 | console.log("Exception in widget model close callback", e, that); |
|
364 | console.log("Exception in widget model close callback", e, that); | |
343 | } |
|
365 | } | |
344 | } |
|
366 | } | |
345 | that.comm.close(); |
|
367 | that.comm.close(); | |
346 | delete that.comm.model; // Delete ref so GC will collect widget model. |
|
368 | delete that.comm.model; // Delete ref so GC will collect widget model. | |
347 | } |
|
369 | } | |
348 | }); |
|
370 | }); | |
349 | return view; |
|
371 | return view; | |
350 | } |
|
372 | } | |
351 | return null; |
|
373 | return null; | |
352 | }, |
|
374 | }, | |
353 |
|
375 | |||
354 |
|
376 | |||
355 | // Build a callback dict. |
|
377 | // Build a callback dict. | |
356 | _make_callbacks: function (cell) { |
|
378 | _make_callbacks: function (cell) { | |
357 | var callbacks = {}; |
|
379 | var callbacks = {}; | |
358 | if (cell != null) { |
|
380 | if (cell != null) { | |
359 |
|
381 | |||
360 | // Try to get output handlers |
|
382 | // Try to get output handlers | |
361 | var handle_output = null; |
|
383 | var handle_output = null; | |
362 | var handle_clear_output = null; |
|
384 | var handle_clear_output = null; | |
363 | if (cell.output_area != undefined && cell.output_area != null) { |
|
385 | if (cell.output_area != undefined && cell.output_area != null) { | |
364 | handle_output = $.proxy(cell.output_area.handle_output, cell.output_area); |
|
386 | handle_output = $.proxy(cell.output_area.handle_output, cell.output_area); | |
365 | handle_clear_output = $.proxy(cell.output_area.handle_clear_output, cell.output_area); |
|
387 | handle_clear_output = $.proxy(cell.output_area.handle_clear_output, cell.output_area); | |
366 | } |
|
388 | } | |
367 |
|
389 | |||
368 | // Create callback dict usign what is known |
|
390 | // Create callback dict usign what is known | |
369 | var that = this; |
|
391 | var that = this; | |
370 | callbacks = { |
|
392 | callbacks = { | |
371 | iopub : { |
|
393 | iopub : { | |
372 | output : handle_output, |
|
394 | output : handle_output, | |
373 | clear_output : handle_clear_output, |
|
395 | clear_output : handle_clear_output, | |
374 |
|
396 | |||
375 | status : function(msg){ |
|
397 | status : function(msg){ | |
376 | that._handle_status(cell, msg); |
|
398 | that._handle_status(cell, msg); | |
377 | }, |
|
399 | }, | |
378 |
|
400 | |||
379 | // Special function only registered by widget messages. |
|
401 | // Special function only registered by widget messages. | |
380 | // Allows us to get the cell for a message so we know |
|
402 | // Allows us to get the cell for a message so we know | |
381 | // where to add widgets if the code requires it. |
|
403 | // where to add widgets if the code requires it. | |
382 | get_cell : function() { |
|
404 | get_cell : function() { | |
383 | return cell; |
|
405 | return cell; | |
384 | }, |
|
406 | }, | |
385 | }, |
|
407 | }, | |
386 | }; |
|
408 | }; | |
387 | } |
|
409 | } | |
388 | return callbacks; |
|
410 | return callbacks; | |
389 | }, |
|
411 | }, | |
390 |
|
412 | |||
391 |
|
413 | |||
392 | // Get the output area corresponding to the msg_id. |
|
414 | // Get the output area corresponding to the msg_id. | |
393 | // cell is an instance of IPython.Cell |
|
415 | // cell is an instance of IPython.Cell | |
394 | _get_msg_cell: function (msg_id) { |
|
416 | _get_msg_cell: function (msg_id) { | |
395 |
|
417 | |||
396 | // First, check to see if the msg was triggered by cell execution. |
|
418 | // First, check to see if the msg was triggered by cell execution. | |
397 | var cell = this.widget_manager.get_msg_cell(msg_id); |
|
419 | var cell = this.widget_manager.get_msg_cell(msg_id); | |
398 | if (cell != null) { |
|
420 | if (cell != null) { | |
399 | return cell; |
|
421 | return cell; | |
400 | } |
|
422 | } | |
401 |
|
423 | |||
402 | // Second, check to see if a get_cell callback was defined |
|
424 | // Second, check to see if a get_cell callback was defined | |
403 | // for the message. get_cell callbacks are registered for |
|
425 | // for the message. get_cell callbacks are registered for | |
404 | // widget messages, so this block is actually checking to see if the |
|
426 | // widget messages, so this block is actually checking to see if the | |
405 | // message was triggered by a widget. |
|
427 | // message was triggered by a widget. | |
406 | var kernel = this.comm_manager.kernel; |
|
428 | var kernel = this.comm_manager.kernel; | |
407 | var callbacks = kernel.get_callbacks_for_msg(msg_id); |
|
429 | var callbacks = kernel.get_callbacks_for_msg(msg_id); | |
408 | if (callbacks != undefined && |
|
430 | if (callbacks != undefined && | |
409 | callbacks.iopub != undefined && |
|
431 | callbacks.iopub != undefined && | |
410 | callbacks.iopub.get_cell != undefined) { |
|
432 | callbacks.iopub.get_cell != undefined) { | |
411 |
|
433 | |||
412 | return callbacks.iopub.get_cell(); |
|
434 | return callbacks.iopub.get_cell(); | |
413 | } |
|
435 | } | |
414 |
|
436 | |||
415 | // Not triggered by a cell or widget (no get_cell callback |
|
437 | // Not triggered by a cell or widget (no get_cell callback | |
416 | // exists). |
|
438 | // exists). | |
417 | return null; |
|
439 | return null; | |
418 | }, |
|
440 | }, | |
419 |
|
441 | |||
420 | }); |
|
442 | }); | |
421 |
|
443 | |||
422 |
|
444 | |||
423 | //-------------------------------------------------------------------- |
|
445 | //-------------------------------------------------------------------- | |
424 | // WidgetView class |
|
446 | // WidgetView class | |
425 | //-------------------------------------------------------------------- |
|
447 | //-------------------------------------------------------------------- | |
426 | var WidgetView = Backbone.View.extend({ |
|
448 | var WidgetView = Backbone.View.extend({ | |
427 |
|
449 | |||
428 | initialize: function() { |
|
450 | initialize: function() { | |
429 | this.visible = true; |
|
451 | this.visible = true; | |
430 | this.model.on('change',this.update,this); |
|
452 | this.model.on('change',this.update,this); | |
431 | this._add_class_calls = this.model.get('_add_class')[0]; |
|
|||
432 | this._remove_class_calls = this.model.get('_remove_class')[0]; |
|
|||
433 | }, |
|
453 | }, | |
434 |
|
454 | |||
|
455 | add_class: function(selector, class_list){ | |||
|
456 | var elements = this._get_selector_element(selector); | |||
|
457 | if (elements.length > 0) { | |||
|
458 | elements.addClass(class_list); | |||
|
459 | } | |||
|
460 | }, | |||
|
461 | ||||
|
462 | remove_class: function(selector, class_list){ | |||
|
463 | var elements = this._get_selector_element(selector); | |||
|
464 | if (elements.length > 0) { | |||
|
465 | elements.removeClass(class_list); | |||
|
466 | } | |||
|
467 | }, | |||
|
468 | ||||
435 | update: function() { |
|
469 | update: function() { | |
436 | if (this.model.get('visible') != undefined) { |
|
470 | if (this.model.get('visible') != undefined) { | |
437 | if (this.visible != this.model.get('visible')) { |
|
471 | if (this.visible != this.model.get('visible')) { | |
438 | this.visible = this.model.get('visible'); |
|
472 | this.visible = this.model.get('visible'); | |
439 | if (this.visible) { |
|
473 | if (this.visible) { | |
440 | this.$el.show(); |
|
474 | this.$el.show(); | |
441 | } else { |
|
475 | } else { | |
442 | this.$el.hide(); |
|
476 | this.$el.hide(); | |
443 | } |
|
477 | } | |
444 | } |
|
478 | } | |
445 | } |
|
479 | } | |
446 |
|
480 | |||
447 | if (this.model.css != undefined) { |
|
481 | if (this.model.css != undefined) { | |
448 | for (var selector in this.model.css) { |
|
482 | for (var selector in this.model.css) { | |
449 | if (this.model.css.hasOwnProperty(selector)) { |
|
483 | if (this.model.css.hasOwnProperty(selector)) { | |
450 |
|
484 | |||
451 | // Apply the css traits to all elements that match the selector. |
|
485 | // Apply the css traits to all elements that match the selector. | |
452 | var elements = this._get_selector_element(selector); |
|
486 | var elements = this._get_selector_element(selector); | |
453 | if (elements.length > 0) { |
|
487 | if (elements.length > 0) { | |
454 | var css_traits = this.model.css[selector]; |
|
488 | var css_traits = this.model.css[selector]; | |
455 | for (var css_key in css_traits) { |
|
489 | for (var css_key in css_traits) { | |
456 | if (css_traits.hasOwnProperty(css_key)) { |
|
490 | if (css_traits.hasOwnProperty(css_key)) { | |
457 | elements.css(css_key, css_traits[css_key]); |
|
491 | elements.css(css_key, css_traits[css_key]); | |
458 | } |
|
492 | } | |
459 | } |
|
493 | } | |
460 | } |
|
494 | } | |
461 | } |
|
495 | } | |
462 | } |
|
496 | } | |
463 | } |
|
497 | } | |
464 |
|
||||
465 | var add_class = this.model.get('_add_class'); |
|
|||
466 | if (add_class != undefined){ |
|
|||
467 | var add_class_calls = add_class[0]; |
|
|||
468 | if (add_class_calls > this._add_class_calls) { |
|
|||
469 | this._add_class_calls = add_class_calls; |
|
|||
470 | var elements = this._get_selector_element(add_class[1]); |
|
|||
471 | if (elements.length > 0) { |
|
|||
472 | elements.addClass(add_class[2]); |
|
|||
473 | } |
|
|||
474 | } |
|
|||
475 | } |
|
|||
476 |
|
||||
477 | var remove_class = this.model.get('_remove_class'); |
|
|||
478 | if (remove_class != undefined){ |
|
|||
479 | var remove_class_calls = remove_class[0]; |
|
|||
480 | if (remove_class_calls > this._remove_class_calls) { |
|
|||
481 | this._remove_class_calls = remove_class_calls; |
|
|||
482 | var elements = this._get_selector_element(remove_class[1]); |
|
|||
483 | if (elements.length > 0) { |
|
|||
484 | elements.removeClass(remove_class[2]); |
|
|||
485 | } |
|
|||
486 | } |
|
|||
487 | } |
|
|||
488 | }, |
|
498 | }, | |
489 |
|
499 | |||
490 | _get_selector_element: function(selector) { |
|
500 | _get_selector_element: function(selector) { | |
491 | // Get the elements via the css selector. If the selector is |
|
501 | // Get the elements via the css selector. If the selector is | |
492 | // blank, apply the style to the $el_to_style element. If |
|
502 | // blank, apply the style to the $el_to_style element. If | |
493 | // the $el_to_style element is not defined, use apply the |
|
503 | // the $el_to_style element is not defined, use apply the | |
494 | // style to the view's element. |
|
504 | // style to the view's element. | |
495 | var elements = this.$el.find(selector); |
|
505 | var elements = this.$el.find(selector); | |
496 | if (selector=='') { |
|
506 | if (selector===undefined || selector===null || selector=='') { | |
497 | if (this.$el_to_style == undefined) { |
|
507 | if (this.$el_to_style == undefined) { | |
498 | elements = this.$el; |
|
508 | elements = this.$el; | |
499 | } else { |
|
509 | } else { | |
500 | elements = this.$el_to_style; |
|
510 | elements = this.$el_to_style; | |
501 | } |
|
511 | } | |
502 | } |
|
512 | } | |
503 | return elements; |
|
513 | return elements; | |
504 | }, |
|
514 | }, | |
505 | }); |
|
515 | }); | |
506 |
|
516 | |||
507 |
|
517 | |||
508 | //-------------------------------------------------------------------- |
|
518 | //-------------------------------------------------------------------- | |
509 | // WidgetManager class |
|
519 | // WidgetManager class | |
510 | //-------------------------------------------------------------------- |
|
520 | //-------------------------------------------------------------------- | |
511 | var WidgetManager = function(){ |
|
521 | var WidgetManager = function(){ | |
512 | this.comm_manager = null; |
|
522 | this.comm_manager = null; | |
513 | this.widget_model_types = {}; |
|
523 | this.widget_model_types = {}; | |
514 | this.widget_view_types = {}; |
|
524 | this.widget_view_types = {}; | |
515 |
|
525 | |||
516 | var that = this; |
|
526 | var that = this; | |
517 | Backbone.sync = function(method, model, options, error) { |
|
527 | Backbone.sync = function(method, model, options, error) { | |
518 | var result = model._handle_sync(method, options); |
|
528 | var result = model._handle_sync(method, options); | |
519 | if (options.success) { |
|
529 | if (options.success) { | |
520 | options.success(result); |
|
530 | options.success(result); | |
521 | } |
|
531 | } | |
522 | }; |
|
532 | }; | |
523 | } |
|
533 | } | |
524 |
|
534 | |||
525 |
|
535 | |||
526 | WidgetManager.prototype.attach_comm_manager = function (comm_manager) { |
|
536 | WidgetManager.prototype.attach_comm_manager = function (comm_manager) { | |
527 | this.comm_manager = comm_manager; |
|
537 | this.comm_manager = comm_manager; | |
528 |
|
538 | |||
529 | // Register already register widget model types with the comm manager. |
|
539 | // Register already register widget model types with the comm manager. | |
530 | for (var widget_model_name in this.widget_model_types) { |
|
540 | for (var widget_model_name in this.widget_model_types) { | |
531 | this.comm_manager.register_target(widget_model_name, $.proxy(this._handle_com_open, this)); |
|
541 | this.comm_manager.register_target(widget_model_name, $.proxy(this._handle_com_open, this)); | |
532 | } |
|
542 | } | |
533 | } |
|
543 | } | |
534 |
|
544 | |||
535 |
|
545 | |||
536 | WidgetManager.prototype.register_widget_model = function (widget_model_name, widget_model_type) { |
|
546 | WidgetManager.prototype.register_widget_model = function (widget_model_name, widget_model_type) { | |
537 | // Register the widget with the comm manager. Make sure to pass this object's context |
|
547 | // Register the widget with the comm manager. Make sure to pass this object's context | |
538 | // in so `this` works in the call back. |
|
548 | // in so `this` works in the call back. | |
539 | if (this.comm_manager!=null) { |
|
549 | if (this.comm_manager!=null) { | |
540 | this.comm_manager.register_target(widget_model_name, $.proxy(this._handle_com_open, this)); |
|
550 | this.comm_manager.register_target(widget_model_name, $.proxy(this._handle_com_open, this)); | |
541 | } |
|
551 | } | |
542 | this.widget_model_types[widget_model_name] = widget_model_type; |
|
552 | this.widget_model_types[widget_model_name] = widget_model_type; | |
543 | } |
|
553 | } | |
544 |
|
554 | |||
545 |
|
555 | |||
546 | WidgetManager.prototype.register_widget_view = function (widget_view_name, widget_view_type) { |
|
556 | WidgetManager.prototype.register_widget_view = function (widget_view_name, widget_view_type) { | |
547 | this.widget_view_types[widget_view_name] = widget_view_type; |
|
557 | this.widget_view_types[widget_view_name] = widget_view_type; | |
548 | } |
|
558 | } | |
549 |
|
559 | |||
550 |
|
560 | |||
551 | WidgetManager.prototype.get_msg_cell = function (msg_id) { |
|
561 | WidgetManager.prototype.get_msg_cell = function (msg_id) { | |
552 | if (IPython.notebook != undefined && IPython.notebook != null) { |
|
562 | if (IPython.notebook != undefined && IPython.notebook != null) { | |
553 | return IPython.notebook.get_msg_cell(msg_id); |
|
563 | return IPython.notebook.get_msg_cell(msg_id); | |
554 | } |
|
564 | } | |
555 | } |
|
565 | } | |
556 |
|
566 | |||
557 |
|
567 | |||
558 | WidgetManager.prototype.on_create_widget = function (callback) { |
|
568 | WidgetManager.prototype.on_create_widget = function (callback) { | |
559 | this._create_widget_callback = callback; |
|
569 | this._create_widget_callback = callback; | |
560 | } |
|
570 | } | |
561 |
|
571 | |||
562 |
|
572 | |||
563 | WidgetManager.prototype._handle_create_widget = function (widget_model) { |
|
573 | WidgetManager.prototype._handle_create_widget = function (widget_model) { | |
564 | if (this._create_widget_callback) { |
|
574 | if (this._create_widget_callback) { | |
565 | try { |
|
575 | try { | |
566 | this._create_widget_callback(widget_model); |
|
576 | this._create_widget_callback(widget_model); | |
567 | } catch (e) { |
|
577 | } catch (e) { | |
568 | console.log("Exception in WidgetManager callback", e, widget_model); |
|
578 | console.log("Exception in WidgetManager callback", e, widget_model); | |
569 | } |
|
579 | } | |
570 | } |
|
580 | } | |
571 | } |
|
581 | } | |
572 |
|
582 | |||
573 |
|
583 | |||
574 | WidgetManager.prototype._handle_com_open = function (comm, msg) { |
|
584 | WidgetManager.prototype._handle_com_open = function (comm, msg) { | |
575 | var widget_type_name = msg.content.target_name; |
|
585 | var widget_type_name = msg.content.target_name; | |
576 | var widget_model = new this.widget_model_types[widget_type_name](this.comm_manager, comm, this); |
|
586 | var widget_model = new this.widget_model_types[widget_type_name](this.comm_manager, comm, this); | |
577 | this._handle_create_widget(widget_model); |
|
587 | this._handle_create_widget(widget_model); | |
578 | } |
|
588 | } | |
579 |
|
589 | |||
580 |
|
590 | |||
581 | //-------------------------------------------------------------------- |
|
591 | //-------------------------------------------------------------------- | |
582 | // Init code |
|
592 | // Init code | |
583 | //-------------------------------------------------------------------- |
|
593 | //-------------------------------------------------------------------- | |
584 | IPython.WidgetManager = WidgetManager; |
|
594 | IPython.WidgetManager = WidgetManager; | |
585 | IPython.WidgetModel = WidgetModel; |
|
595 | IPython.WidgetModel = WidgetModel; | |
586 | IPython.WidgetView = WidgetView; |
|
596 | IPython.WidgetView = WidgetView; | |
587 |
|
597 | |||
588 | if (IPython.widget_manager==undefined || IPython.widget_manager==null) { |
|
598 | if (IPython.widget_manager==undefined || IPython.widget_manager==null) { | |
589 | IPython.widget_manager = new WidgetManager(); |
|
599 | IPython.widget_manager = new WidgetManager(); | |
590 | } |
|
600 | } | |
591 |
|
601 | |||
592 | return IPython.widget_manager; |
|
602 | return IPython.widget_manager; | |
593 | }); |
|
603 | }); |
@@ -1,416 +1,414 b'' | |||||
1 | """Base Widget class. Allows user to create widgets in the backend that render |
|
1 | """Base Widget class. Allows user to create widgets in the backend that render | |
2 | in the IPython notebook frontend. |
|
2 | in the IPython notebook frontend. | |
3 | """ |
|
3 | """ | |
4 | #----------------------------------------------------------------------------- |
|
4 | #----------------------------------------------------------------------------- | |
5 | # Copyright (c) 2013, the IPython Development Team. |
|
5 | # Copyright (c) 2013, the IPython Development Team. | |
6 | # |
|
6 | # | |
7 | # Distributed under the terms of the Modified BSD License. |
|
7 | # Distributed under the terms of the Modified BSD License. | |
8 | # |
|
8 | # | |
9 | # The full license is in the file COPYING.txt, distributed with this software. |
|
9 | # The full license is in the file COPYING.txt, distributed with this software. | |
10 | #----------------------------------------------------------------------------- |
|
10 | #----------------------------------------------------------------------------- | |
11 |
|
11 | |||
12 | #----------------------------------------------------------------------------- |
|
12 | #----------------------------------------------------------------------------- | |
13 | # Imports |
|
13 | # Imports | |
14 | #----------------------------------------------------------------------------- |
|
14 | #----------------------------------------------------------------------------- | |
15 | from copy import copy |
|
15 | from copy import copy | |
16 | from glob import glob |
|
16 | from glob import glob | |
17 | import uuid |
|
17 | import uuid | |
18 | import sys |
|
18 | import sys | |
19 | import os |
|
19 | import os | |
20 | import inspect |
|
20 | import inspect | |
21 | import types |
|
21 | import types | |
22 |
|
22 | |||
23 | import IPython |
|
23 | import IPython | |
24 | from IPython.kernel.comm import Comm |
|
24 | from IPython.kernel.comm import Comm | |
25 | from IPython.config import LoggingConfigurable |
|
25 | from IPython.config import LoggingConfigurable | |
26 | from IPython.utils.traitlets import Unicode, Dict, List, Instance, Bool |
|
26 | from IPython.utils.traitlets import Unicode, Dict, List, Instance, Bool | |
27 | from IPython.display import Javascript, display |
|
27 | from IPython.display import Javascript, display | |
28 | from IPython.utils.py3compat import string_types |
|
28 | from IPython.utils.py3compat import string_types | |
29 |
|
29 | |||
30 |
|
30 | |||
31 | #----------------------------------------------------------------------------- |
|
31 | #----------------------------------------------------------------------------- | |
32 | # Classes |
|
32 | # Classes | |
33 | #----------------------------------------------------------------------------- |
|
33 | #----------------------------------------------------------------------------- | |
34 | class Widget(LoggingConfigurable): |
|
34 | class Widget(LoggingConfigurable): | |
35 |
|
35 | |||
36 | # Shared declarations |
|
36 | # Shared declarations | |
37 | _keys = [] |
|
37 | _keys = [] | |
38 |
|
38 | |||
39 | # Public declarations |
|
39 | # Public declarations | |
40 | target_name = Unicode('widget', help="""Name of the backbone model |
|
40 | target_name = Unicode('widget', help="""Name of the backbone model | |
41 | registered in the frontend to create and sync this widget with.""") |
|
41 | registered in the frontend to create and sync this widget with.""") | |
42 | default_view_name = Unicode(help="""Default view registered in the frontend |
|
42 | default_view_name = Unicode(help="""Default view registered in the frontend | |
43 | to use to represent the widget.""") |
|
43 | to use to represent the widget.""") | |
44 | parent = Instance('IPython.html.widgets.widget.Widget') |
|
44 | parent = Instance('IPython.html.widgets.widget.Widget') | |
45 | visible = Bool(True, help="Whether or not the widget is visible.") |
|
45 | visible = Bool(True, help="Whether or not the widget is visible.") | |
46 |
|
46 | |||
47 | def _parent_changed(self, name, old, new): |
|
47 | def _parent_changed(self, name, old, new): | |
48 | if self._displayed: |
|
48 | if self._displayed: | |
49 | raise Exception('Parent cannot be set because widget has been displayed.') |
|
49 | raise Exception('Parent cannot be set because widget has been displayed.') | |
50 | elif new == self: |
|
50 | elif new == self: | |
51 | raise Exception('Parent cannot be set to self.') |
|
51 | raise Exception('Parent cannot be set to self.') | |
52 | else: |
|
52 | else: | |
53 |
|
53 | |||
54 | # Parent/child association |
|
54 | # Parent/child association | |
55 | if new is not None and not self in new._children: |
|
55 | if new is not None and not self in new._children: | |
56 | new._children.append(self) |
|
56 | new._children.append(self) | |
57 | if old is not None and self in old._children: |
|
57 | if old is not None and self in old._children: | |
58 | old._children.remove(self) |
|
58 | old._children.remove(self) | |
59 |
|
59 | |||
60 | # Private/protected declarations |
|
60 | # Private/protected declarations | |
61 | _property_lock = (None, None) # Last updated (key, value) from the front-end. Prevents echo. |
|
61 | _property_lock = (None, None) # Last updated (key, value) from the front-end. Prevents echo. | |
62 | _css = Dict() # Internal CSS property dict |
|
62 | _css = Dict() # Internal CSS property dict | |
63 | _add_class = List() # Used to add a js class to a DOM element (call#, selector, class_name) |
|
|||
64 | _remove_class = List() # Used to remove a js class from a DOM element (call#, selector, class_name) |
|
|||
65 | _displayed = False |
|
63 | _displayed = False | |
66 | _comm = None |
|
64 | _comm = None | |
67 |
|
65 | |||
68 |
|
66 | |||
69 | def __init__(self, **kwargs): |
|
67 | def __init__(self, **kwargs): | |
70 | """Public constructor |
|
68 | """Public constructor | |
71 |
|
69 | |||
72 | Parameters |
|
70 | Parameters | |
73 | ---------- |
|
71 | ---------- | |
74 | parent : Widget instance (optional) |
|
72 | parent : Widget instance (optional) | |
75 | Widget that this widget instance is child of. When the widget is |
|
73 | Widget that this widget instance is child of. When the widget is | |
76 | displayed in the frontend, it's corresponding view will be made |
|
74 | displayed in the frontend, it's corresponding view will be made | |
77 | child of the parent's view if the parent's view exists already. If |
|
75 | child of the parent's view if the parent's view exists already. If | |
78 | the parent's view is displayed, it will automatically display this |
|
76 | the parent's view is displayed, it will automatically display this | |
79 | widget's default view as it's child. The default view can be set |
|
77 | widget's default view as it's child. The default view can be set | |
80 | via the default_view_name property. |
|
78 | via the default_view_name property. | |
81 | """ |
|
79 | """ | |
82 | self._children = [] |
|
80 | self._children = [] | |
83 | self._add_class = [0] |
|
|||
84 | self._remove_class = [0] |
|
|||
85 | self._display_callbacks = [] |
|
81 | self._display_callbacks = [] | |
86 | self._msg_callbacks = [] |
|
82 | self._msg_callbacks = [] | |
87 | super(Widget, self).__init__(**kwargs) |
|
83 | super(Widget, self).__init__(**kwargs) | |
88 |
|
84 | |||
89 | # Register after init to allow default values to be specified |
|
85 | # Register after init to allow default values to be specified | |
90 | self.on_trait_change(self._handle_property_changed, self.keys) |
|
86 | self.on_trait_change(self._handle_property_changed, self.keys) | |
91 |
|
87 | |||
92 |
|
88 | |||
93 | def __del__(self): |
|
89 | def __del__(self): | |
94 | """Object disposal""" |
|
90 | """Object disposal""" | |
95 | self.close() |
|
91 | self.close() | |
96 |
|
92 | |||
97 |
|
93 | |||
98 | def close(self): |
|
94 | def close(self): | |
99 | """Close method. Closes the widget which closes the underlying comm. |
|
95 | """Close method. Closes the widget which closes the underlying comm. | |
100 | When the comm is closed, all of the widget views are automatically |
|
96 | When the comm is closed, all of the widget views are automatically | |
101 | removed from the frontend.""" |
|
97 | removed from the frontend.""" | |
102 | try: |
|
98 | try: | |
103 | self._comm.close() |
|
99 | self._comm.close() | |
104 | del self._comm |
|
100 | del self._comm | |
105 | except: |
|
101 | except: | |
106 | pass # Comm doesn't exist and/or is already closed. |
|
102 | pass # Comm doesn't exist and/or is already closed. | |
107 |
|
103 | |||
108 |
|
104 | |||
109 | # Properties |
|
105 | # Properties | |
110 | def _get_keys(self): |
|
106 | def _get_keys(self): | |
111 |
keys = ['visible', '_css' |
|
107 | keys = ['visible', '_css'] | |
112 | keys.extend(self._keys) |
|
108 | keys.extend(self._keys) | |
113 | return keys |
|
109 | return keys | |
114 | keys = property(_get_keys) |
|
110 | keys = property(_get_keys) | |
115 |
|
111 | |||
116 |
|
112 | |||
117 | # Event handlers |
|
113 | # Event handlers | |
118 | def _handle_msg(self, msg): |
|
114 | def _handle_msg(self, msg): | |
119 | """Called when a msg is recieved from the frontend""" |
|
115 | """Called when a msg is recieved from the frontend""" | |
120 | data = msg['content']['data'] |
|
116 | data = msg['content']['data'] | |
121 |
|
117 | |||
122 | # Handle backbone sync methods CREATE, PATCH, and UPDATE |
|
118 | # Handle backbone sync methods CREATE, PATCH, and UPDATE | |
123 | if 'sync_method' in data and 'sync_data' in data: |
|
119 | if 'sync_method' in data and 'sync_data' in data: | |
124 | sync_method = data['sync_method'] |
|
120 | sync_method = data['sync_method'] | |
125 | sync_data = data['sync_data'] |
|
121 | sync_data = data['sync_data'] | |
126 | self._handle_recieve_state(sync_data) # handles all methods |
|
122 | self._handle_recieve_state(sync_data) # handles all methods | |
127 |
|
123 | |||
128 | # Handle a custom msg from the front-end |
|
124 | # Handle a custom msg from the front-end | |
129 | if 'custom_content' in data: |
|
125 | if 'custom_content' in data: | |
130 | self._handle_custom_msg(data['custom_content']) |
|
126 | self._handle_custom_msg(data['custom_content']) | |
131 |
|
127 | |||
132 |
|
128 | |||
133 | def _handle_custom_msg(self, content): |
|
129 | def _handle_custom_msg(self, content): | |
134 | """Called when a custom msg is recieved.""" |
|
130 | """Called when a custom msg is recieved.""" | |
135 | for handler in self._msg_callbacks: |
|
131 | for handler in self._msg_callbacks: | |
136 | if callable(handler): |
|
132 | if callable(handler): | |
137 | argspec = inspect.getargspec(handler) |
|
133 | argspec = inspect.getargspec(handler) | |
138 | nargs = len(argspec[0]) |
|
134 | nargs = len(argspec[0]) | |
139 |
|
135 | |||
140 | # Bound methods have an additional 'self' argument |
|
136 | # Bound methods have an additional 'self' argument | |
141 | if isinstance(handler, types.MethodType): |
|
137 | if isinstance(handler, types.MethodType): | |
142 | nargs -= 1 |
|
138 | nargs -= 1 | |
143 |
|
139 | |||
144 | # Call the callback |
|
140 | # Call the callback | |
145 | if nargs == 1: |
|
141 | if nargs == 1: | |
146 | handler(content) |
|
142 | handler(content) | |
147 | elif nargs == 2: |
|
143 | elif nargs == 2: | |
148 | handler(self, content) |
|
144 | handler(self, content) | |
149 | else: |
|
145 | else: | |
150 | raise TypeError('Widget msg callback must ' \ |
|
146 | raise TypeError('Widget msg callback must ' \ | |
151 | 'accept 1 or 2 arguments, not %d.' % nargs) |
|
147 | 'accept 1 or 2 arguments, not %d.' % nargs) | |
152 |
|
148 | |||
153 |
|
149 | |||
154 | def _handle_recieve_state(self, sync_data): |
|
150 | def _handle_recieve_state(self, sync_data): | |
155 | """Called when a state is recieved from the frontend.""" |
|
151 | """Called when a state is recieved from the frontend.""" | |
156 | # Use _keys instead of keys - Don't get retrieve the css from the client side. |
|
152 | # Use _keys instead of keys - Don't get retrieve the css from the client side. | |
157 | for name in self._keys: |
|
153 | for name in self._keys: | |
158 | if name in sync_data: |
|
154 | if name in sync_data: | |
159 | try: |
|
155 | try: | |
160 | self._property_lock = (name, sync_data[name]) |
|
156 | self._property_lock = (name, sync_data[name]) | |
161 | setattr(self, name, sync_data[name]) |
|
157 | setattr(self, name, sync_data[name]) | |
162 | finally: |
|
158 | finally: | |
163 | self._property_lock = (None, None) |
|
159 | self._property_lock = (None, None) | |
164 |
|
160 | |||
165 |
|
161 | |||
166 | def _handle_property_changed(self, name, old, new): |
|
162 | def _handle_property_changed(self, name, old, new): | |
167 | """Called when a proeprty has been changed.""" |
|
163 | """Called when a proeprty has been changed.""" | |
168 | # Make sure this isn't information that the front-end just sent us. |
|
164 | # Make sure this isn't information that the front-end just sent us. | |
169 | if self._property_lock[0] != name and self._property_lock[1] != new \ |
|
165 | if self._property_lock[0] != name and self._property_lock[1] != new \ | |
170 | and self._comm is not None: |
|
166 | and self._comm is not None: | |
171 | # TODO: Validate properties. |
|
167 | # TODO: Validate properties. | |
172 | # Send new state to frontend |
|
168 | # Send new state to frontend | |
173 | self.send_state(key=name) |
|
169 | self.send_state(key=name) | |
174 |
|
170 | |||
175 |
|
171 | |||
176 | def _handle_close(self): |
|
172 | def _handle_close(self): | |
177 | """Called when the comm is closed by the frontend.""" |
|
173 | """Called when the comm is closed by the frontend.""" | |
178 | self._comm = None |
|
174 | self._comm = None | |
179 |
|
175 | |||
180 |
|
176 | |||
181 | def _handle_displayed(self, view_name): |
|
177 | def _handle_displayed(self, view_name): | |
182 | """Called when a view has been displayed for this widget instance |
|
178 | """Called when a view has been displayed for this widget instance | |
183 |
|
179 | |||
184 | Parameters |
|
180 | Parameters | |
185 | ---------- |
|
181 | ---------- | |
186 | view_name: unicode |
|
182 | view_name: unicode | |
187 | Name of the view that was displayed.""" |
|
183 | Name of the view that was displayed.""" | |
188 | for handler in self._display_callbacks: |
|
184 | for handler in self._display_callbacks: | |
189 | if callable(handler): |
|
185 | if callable(handler): | |
190 | argspec = inspect.getargspec(handler) |
|
186 | argspec = inspect.getargspec(handler) | |
191 | nargs = len(argspec[0]) |
|
187 | nargs = len(argspec[0]) | |
192 |
|
188 | |||
193 | # Bound methods have an additional 'self' argument |
|
189 | # Bound methods have an additional 'self' argument | |
194 | if isinstance(handler, types.MethodType): |
|
190 | if isinstance(handler, types.MethodType): | |
195 | nargs -= 1 |
|
191 | nargs -= 1 | |
196 |
|
192 | |||
197 | # Call the callback |
|
193 | # Call the callback | |
198 | if nargs == 0: |
|
194 | if nargs == 0: | |
199 | handler() |
|
195 | handler() | |
200 | elif nargs == 1: |
|
196 | elif nargs == 1: | |
201 | handler(self) |
|
197 | handler(self) | |
202 | elif nargs == 2: |
|
198 | elif nargs == 2: | |
203 | handler(self, view_name) |
|
199 | handler(self, view_name) | |
204 | else: |
|
200 | else: | |
205 | raise TypeError('Widget display callback must ' \ |
|
201 | raise TypeError('Widget display callback must ' \ | |
206 | 'accept 0-2 arguments, not %d.' % nargs) |
|
202 | 'accept 0-2 arguments, not %d.' % nargs) | |
207 |
|
203 | |||
208 |
|
204 | |||
209 | # Public methods |
|
205 | # Public methods | |
210 | def send_state(self, key=None): |
|
206 | def send_state(self, key=None): | |
211 | """Sends the widget state, or a piece of it, to the frontend. |
|
207 | """Sends the widget state, or a piece of it, to the frontend. | |
212 |
|
208 | |||
213 | Parameters |
|
209 | Parameters | |
214 | ---------- |
|
210 | ---------- | |
215 | key : unicode (optional) |
|
211 | key : unicode (optional) | |
216 | A single property's name to sync with the frontend. |
|
212 | A single property's name to sync with the frontend. | |
217 | """ |
|
213 | """ | |
218 | if self._comm is not None: |
|
214 | if self._comm is not None: | |
219 | state = {} |
|
215 | state = {} | |
220 |
|
216 | |||
221 | # If a key is provided, just send the state of that key. |
|
217 | # If a key is provided, just send the state of that key. | |
222 | keys = [] |
|
218 | keys = [] | |
223 | if key is None: |
|
219 | if key is None: | |
224 | keys.extend(self.keys) |
|
220 | keys.extend(self.keys) | |
225 | else: |
|
221 | else: | |
226 | keys.append(key) |
|
222 | keys.append(key) | |
227 | for key in self.keys: |
|
223 | for key in self.keys: | |
228 | try: |
|
224 | try: | |
229 | state[key] = getattr(self, key) |
|
225 | state[key] = getattr(self, key) | |
230 | except Exception as e: |
|
226 | except Exception as e: | |
231 | pass # Eat errors, nom nom nom |
|
227 | pass # Eat errors, nom nom nom | |
232 | self._comm.send({"method": "update", |
|
228 | self._comm.send({"method": "update", | |
233 | "state": state}) |
|
229 | "state": state}) | |
234 |
|
230 | |||
235 |
|
231 | |||
236 | def get_css(self, key, selector=""): |
|
232 | def get_css(self, key, selector=""): | |
237 | """Get a CSS property of the widget. Note, this function does not |
|
233 | """Get a CSS property of the widget. Note, this function does not | |
238 | actually request the CSS from the front-end; Only properties that have |
|
234 | actually request the CSS from the front-end; Only properties that have | |
239 | been set with set_css can be read. |
|
235 | been set with set_css can be read. | |
240 |
|
236 | |||
241 | Parameters |
|
237 | Parameters | |
242 | ---------- |
|
238 | ---------- | |
243 | key: unicode |
|
239 | key: unicode | |
244 | CSS key |
|
240 | CSS key | |
245 | selector: unicode (optional) |
|
241 | selector: unicode (optional) | |
246 | JQuery selector used when the CSS key/value was set. |
|
242 | JQuery selector used when the CSS key/value was set. | |
247 | """ |
|
243 | """ | |
248 | if selector in self._css and key in self._css[selector]: |
|
244 | if selector in self._css and key in self._css[selector]: | |
249 | return self._css[selector][key] |
|
245 | return self._css[selector][key] | |
250 | else: |
|
246 | else: | |
251 | return None |
|
247 | return None | |
252 |
|
248 | |||
253 |
|
249 | |||
254 | def set_css(self, *args, **kwargs): |
|
250 | def set_css(self, *args, **kwargs): | |
255 | """Set one or more CSS properties of the widget (shared among all of the |
|
251 | """Set one or more CSS properties of the widget (shared among all of the | |
256 | views). This function has two signatures: |
|
252 | views). This function has two signatures: | |
257 | - set_css(css_dict, [selector='']) |
|
253 | - set_css(css_dict, [selector='']) | |
258 | - set_css(key, value, [selector='']) |
|
254 | - set_css(key, value, [selector='']) | |
259 |
|
255 | |||
260 | Parameters |
|
256 | Parameters | |
261 | ---------- |
|
257 | ---------- | |
262 | css_dict : dict |
|
258 | css_dict : dict | |
263 | CSS key/value pairs to apply |
|
259 | CSS key/value pairs to apply | |
264 | key: unicode |
|
260 | key: unicode | |
265 | CSS key |
|
261 | CSS key | |
266 | value |
|
262 | value | |
267 | CSS value |
|
263 | CSS value | |
268 | selector: unicode (optional) |
|
264 | selector: unicode (optional) | |
269 | JQuery selector to use to apply the CSS key/value. |
|
265 | JQuery selector to use to apply the CSS key/value. | |
270 | """ |
|
266 | """ | |
271 | selector = kwargs.get('selector', '') |
|
267 | selector = kwargs.get('selector', '') | |
272 |
|
268 | |||
273 | # Signature 1: set_css(css_dict, [selector='']) |
|
269 | # Signature 1: set_css(css_dict, [selector='']) | |
274 | if len(args) == 1: |
|
270 | if len(args) == 1: | |
275 | if isinstance(args[0], dict): |
|
271 | if isinstance(args[0], dict): | |
276 | for (key, value) in args[0].items(): |
|
272 | for (key, value) in args[0].items(): | |
277 | self.set_css(key, value, selector=selector) |
|
273 | self.set_css(key, value, selector=selector) | |
278 | else: |
|
274 | else: | |
279 | raise Exception('css_dict must be a dict.') |
|
275 | raise Exception('css_dict must be a dict.') | |
280 |
|
276 | |||
281 | # Signature 2: set_css(key, value, [selector='']) |
|
277 | # Signature 2: set_css(key, value, [selector='']) | |
282 | elif len(args) == 2 or len(args) == 3: |
|
278 | elif len(args) == 2 or len(args) == 3: | |
283 |
|
279 | |||
284 | # Selector can be a positional arg if it's the 3rd value |
|
280 | # Selector can be a positional arg if it's the 3rd value | |
285 | if len(args) == 3: |
|
281 | if len(args) == 3: | |
286 | selector = args[2] |
|
282 | selector = args[2] | |
287 | if selector not in self._css: |
|
283 | if selector not in self._css: | |
288 | self._css[selector] = {} |
|
284 | self._css[selector] = {} | |
289 |
|
285 | |||
290 | # Only update the property if it has changed. |
|
286 | # Only update the property if it has changed. | |
291 | key = args[0] |
|
287 | key = args[0] | |
292 | value = args[1] |
|
288 | value = args[1] | |
293 | if not (key in self._css[selector] and value in self._css[selector][key]): |
|
289 | if not (key in self._css[selector] and value in self._css[selector][key]): | |
294 | self._css[selector][key] = value |
|
290 | self._css[selector][key] = value | |
295 | self.send_state('_css') # Send new state to client. |
|
291 | self.send_state('_css') # Send new state to client. | |
296 | else: |
|
292 | else: | |
297 | raise Exception('set_css only accepts 1-3 arguments') |
|
293 | raise Exception('set_css only accepts 1-3 arguments') | |
298 |
|
294 | |||
299 |
|
295 | |||
300 | def add_class(self, class_name, selector=""): |
|
296 | def add_class(self, class_name, selector=""): | |
301 | """Add class[es] to a DOM element |
|
297 | """Add class[es] to a DOM element | |
302 |
|
298 | |||
303 | Parameters |
|
299 | Parameters | |
304 | ---------- |
|
300 | ---------- | |
305 | class_name: unicode |
|
301 | class_name: unicode | |
306 | Class name(s) to add to the DOM element(s). Multiple class names |
|
302 | Class name(s) to add to the DOM element(s). Multiple class names | |
307 | must be space separated. |
|
303 | must be space separated. | |
308 | selector: unicode (optional) |
|
304 | selector: unicode (optional) | |
309 | JQuery selector to select the DOM element(s) that the class(es) will |
|
305 | JQuery selector to select the DOM element(s) that the class(es) will | |
310 | be added to. |
|
306 | be added to. | |
311 | """ |
|
307 | """ | |
312 | self._add_class = [self._add_class[0] + 1, selector, class_name] |
|
308 | self._comm.send({"method": "add_class", | |
313 | self.send_state(key='_add_class') |
|
309 | "class_list": class_name, | |
|
310 | "selector": selector}) | |||
314 |
|
311 | |||
315 |
|
312 | |||
316 | def remove_class(self, class_name, selector=""): |
|
313 | def remove_class(self, class_name, selector=""): | |
317 | """Remove class[es] from a DOM element |
|
314 | """Remove class[es] from a DOM element | |
318 |
|
315 | |||
319 | Parameters |
|
316 | Parameters | |
320 | ---------- |
|
317 | ---------- | |
321 | class_name: unicode |
|
318 | class_name: unicode | |
322 | Class name(s) to remove from the DOM element(s). Multiple class |
|
319 | Class name(s) to remove from the DOM element(s). Multiple class | |
323 | names must be space separated. |
|
320 | names must be space separated. | |
324 | selector: unicode (optional) |
|
321 | selector: unicode (optional) | |
325 | JQuery selector to select the DOM element(s) that the class(es) will |
|
322 | JQuery selector to select the DOM element(s) that the class(es) will | |
326 | be removed from. |
|
323 | be removed from. | |
327 | """ |
|
324 | """ | |
328 | self._remove_class = [self._remove_class[0] + 1, selector, class_name] |
|
325 | self._comm.send({"method": "remove_class", | |
329 | self.send_state(key='_remove_class') |
|
326 | "class_list": class_name, | |
|
327 | "selector": selector}) | |||
330 |
|
328 | |||
331 |
|
329 | |||
332 | def send(self, content): |
|
330 | def send(self, content): | |
333 | """Sends a custom msg to the widget model in the front-end. |
|
331 | """Sends a custom msg to the widget model in the front-end. | |
334 |
|
332 | |||
335 | Parameters |
|
333 | Parameters | |
336 | ---------- |
|
334 | ---------- | |
337 | content : dict |
|
335 | content : dict | |
338 | Content of the message to send. |
|
336 | Content of the message to send. | |
339 | """ |
|
337 | """ | |
340 | if self._comm is not None: |
|
338 | if self._comm is not None: | |
341 | self._comm.send({"method": "custom", |
|
339 | self._comm.send({"method": "custom", | |
342 | "custom_content": content}) |
|
340 | "custom_content": content}) | |
343 |
|
341 | |||
344 |
|
342 | |||
345 | def on_msg(self, callback, remove=False): |
|
343 | def on_msg(self, callback, remove=False): | |
346 | """Register a callback for when a custom msg is recieved from the front-end |
|
344 | """Register a callback for when a custom msg is recieved from the front-end | |
347 |
|
345 | |||
348 | Parameters |
|
346 | Parameters | |
349 | ---------- |
|
347 | ---------- | |
350 | callback: method handler |
|
348 | callback: method handler | |
351 | Can have a signature of: |
|
349 | Can have a signature of: | |
352 | - callback(content) |
|
350 | - callback(content) | |
353 | - callback(sender, content) |
|
351 | - callback(sender, content) | |
354 | remove: bool |
|
352 | remove: bool | |
355 | True if the callback should be unregistered.""" |
|
353 | True if the callback should be unregistered.""" | |
356 | if remove and callback in self._msg_callbacks: |
|
354 | if remove and callback in self._msg_callbacks: | |
357 | self._msg_callbacks.remove(callback) |
|
355 | self._msg_callbacks.remove(callback) | |
358 | elif not remove and not callback in self._msg_callbacks: |
|
356 | elif not remove and not callback in self._msg_callbacks: | |
359 | self._msg_callbacks.append(callback) |
|
357 | self._msg_callbacks.append(callback) | |
360 |
|
358 | |||
361 |
|
359 | |||
362 | def on_displayed(self, callback, remove=False): |
|
360 | def on_displayed(self, callback, remove=False): | |
363 | """Register a callback to be called when the widget has been displayed |
|
361 | """Register a callback to be called when the widget has been displayed | |
364 |
|
362 | |||
365 | Parameters |
|
363 | Parameters | |
366 | ---------- |
|
364 | ---------- | |
367 | callback: method handler |
|
365 | callback: method handler | |
368 | Can have a signature of: |
|
366 | Can have a signature of: | |
369 | - callback() |
|
367 | - callback() | |
370 | - callback(sender) |
|
368 | - callback(sender) | |
371 | - callback(sender, view_name) |
|
369 | - callback(sender, view_name) | |
372 | remove: bool |
|
370 | remove: bool | |
373 | True if the callback should be unregistered.""" |
|
371 | True if the callback should be unregistered.""" | |
374 | if remove and callback in self._display_callbacks: |
|
372 | if remove and callback in self._display_callbacks: | |
375 | self._display_callbacks.remove(callback) |
|
373 | self._display_callbacks.remove(callback) | |
376 | elif not remove and not callback in self._display_callbacks: |
|
374 | elif not remove and not callback in self._display_callbacks: | |
377 | self._display_callbacks.append(callback) |
|
375 | self._display_callbacks.append(callback) | |
378 |
|
376 | |||
379 |
|
377 | |||
380 | # Support methods |
|
378 | # Support methods | |
381 | def _repr_widget_(self, view_name=None): |
|
379 | def _repr_widget_(self, view_name=None): | |
382 | """Function that is called when `IPython.display.display` is called on |
|
380 | """Function that is called when `IPython.display.display` is called on | |
383 | the widget. |
|
381 | the widget. | |
384 |
|
382 | |||
385 | Parameters |
|
383 | Parameters | |
386 | ---------- |
|
384 | ---------- | |
387 | view_name: unicode (optional) |
|
385 | view_name: unicode (optional) | |
388 | View to display in the frontend. Overrides default_view_name.""" |
|
386 | View to display in the frontend. Overrides default_view_name.""" | |
389 |
|
387 | |||
390 | if not view_name: |
|
388 | if not view_name: | |
391 | view_name = self.default_view_name |
|
389 | view_name = self.default_view_name | |
392 |
|
390 | |||
393 | # Create a comm. |
|
391 | # Create a comm. | |
394 | if self._comm is None: |
|
392 | if self._comm is None: | |
395 | self._comm = Comm(target_name=self.target_name) |
|
393 | self._comm = Comm(target_name=self.target_name) | |
396 | self._comm.on_msg(self._handle_msg) |
|
394 | self._comm.on_msg(self._handle_msg) | |
397 | self._comm.on_close(self._handle_close) |
|
395 | self._comm.on_close(self._handle_close) | |
398 |
|
396 | |||
399 | # Make sure model is syncronized |
|
397 | # Make sure model is syncronized | |
400 | self.send_state() |
|
398 | self.send_state() | |
401 |
|
399 | |||
402 | # Show view. |
|
400 | # Show view. | |
403 | if self.parent is None or self.parent._comm is None: |
|
401 | if self.parent is None or self.parent._comm is None: | |
404 | self._comm.send({"method": "display", "view_name": view_name}) |
|
402 | self._comm.send({"method": "display", "view_name": view_name}) | |
405 | else: |
|
403 | else: | |
406 | self._comm.send({"method": "display", |
|
404 | self._comm.send({"method": "display", | |
407 | "view_name": view_name, |
|
405 | "view_name": view_name, | |
408 | "parent": self.parent._comm.comm_id}) |
|
406 | "parent": self.parent._comm.comm_id}) | |
409 | self._displayed = True |
|
407 | self._displayed = True | |
410 | self._handle_displayed(view_name) |
|
408 | self._handle_displayed(view_name) | |
411 |
|
409 | |||
412 | # Now display children if any. |
|
410 | # Now display children if any. | |
413 | for child in self._children: |
|
411 | for child in self._children: | |
414 | if child != self: |
|
412 | if child != self: | |
415 | child._repr_widget_() |
|
413 | child._repr_widget_() | |
416 | return None |
|
414 | return None |
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