##// END OF EJS Templates
Explicitly return null if there aren't any results
Explicitly return null if there aren't any results

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widget_selection.js
372 lines | 14.6 KiB | application/javascript | JavascriptLexer
//----------------------------------------------------------------------------
// Copyright (C) 2013 The IPython Development Team
//
// Distributed under the terms of the BSD License. The full license is in
// the file COPYING, distributed as part of this software.
//----------------------------------------------------------------------------
//============================================================================
// SelectionWidget
//============================================================================
/**
* @module IPython
* @namespace IPython
**/
define(["notebook/js/widgets/widget"], function(WidgetManager){
var DropdownView = IPython.DOMWidgetView.extend({
render : function(){
// Called when view is rendered.
this.$el
.addClass('widget-hbox-single');
this.$label = $('<div />')
.appendTo(this.$el)
.addClass('widget-hlabel')
.hide();
this.$buttongroup = $('<div />')
.addClass('widget_item')
.addClass('btn-group')
.appendTo(this.$el);
this.$el_to_style = this.$buttongroup; // Set default element to style
this.$droplabel = $('<button />')
.addClass('btn')
.addClass('widget-combo-btn')
.text(' ')
.appendTo(this.$buttongroup);
this.$dropbutton = $('<button />')
.addClass('btn')
.addClass('dropdown-toggle')
.addClass('widget-combo-carrot-btn')
.attr('data-toggle', 'dropdown')
.append($('<span />').addClass("caret"))
.appendTo(this.$buttongroup);
this.$droplist = $('<ul />')
.addClass('dropdown-menu')
.appendTo(this.$buttongroup);
// Set defaults.
this.update();
},
update : function(options){
// Update the contents of this view
//
// Called when the model is changed. The model may have been
// changed by another view or by a state update from the back-end.
if (options === undefined || options.updated_view != this) {
var selected_item_text = this.model.get('value');
if (selected_item_text.length === 0) {
this.$droplabel.text(' ');
} else {
this.$droplabel.text(selected_item_text);
}
var items = this.model.get('values');
var $replace_droplist = $('<ul />')
.addClass('dropdown-menu');
_.each(items, function(item, i) {
var item_button = $('<a href="#"/>')
.text(item)
.on('click', $.proxy(this.handle_click, this));
$replace_droplist.append($('<li />').append(item_button));
});
this.$droplist.replaceWith($replace_droplist);
this.$droplist.remove();
this.$droplist = $replace_droplist;
if (this.model.get('disabled')) {
this.$buttongroup.attr('disabled','disabled');
this.$droplabel.attr('disabled','disabled');
this.$dropbutton.attr('disabled','disabled');
this.$droplist.attr('disabled','disabled');
} else {
this.$buttongroup.removeAttr('disabled');
this.$droplabel.removeAttr('disabled');
this.$dropbutton.removeAttr('disabled');
this.$droplist.removeAttr('disabled');
}
var description = this.model.get('description');
if (description.length === 0) {
this.$label.hide();
} else {
this.$label.text(description);
this.$label.show();
}
}
return DropdownView.__super__.update.apply(this);
},
handle_click: function (e) {
// Handle when a value is clicked.
// Calling model.set will trigger all of the other views of the
// model to update.
this.model.set('value', $(e.target).text(), {updated_view: this});
this.touch();
},
});
WidgetManager.register_widget_view('DropdownView', DropdownView);
var RadioButtonsView = IPython.DOMWidgetView.extend({
render : function(){
// Called when view is rendered.
this.$el
.addClass('widget-hbox');
this.$label = $('<div />')
.appendTo(this.$el)
.addClass('widget-hlabel')
.hide();
this.$container = $('<div />')
.appendTo(this.$el)
.addClass('widget-container')
.addClass('vbox');
this.$el_to_style = this.$container; // Set default element to style
this.update();
},
update : function(options){
// Update the contents of this view
//
// Called when the model is changed. The model may have been
// changed by another view or by a state update from the back-end.
if (options === undefined || options.updated_view != this) {
// Add missing items to the DOM.
var items = this.model.get('values');
var disabled = this.model.get('disabled');
_.each(items, function(item, index) {
var item_query = ' :input[value="' + item + '"]';
if (this.$el.find(item_query).length === 0) {
var $label = $('<label />')
.addClass('radio')
.text(item)
.appendTo(this.$container);
$('<input />')
.attr('type', 'radio')
.addClass(this.model)
.val(item)
.prependTo($label)
.on('click', $.proxy(this.handle_click, this));
}
var $item_element = this.$container.find(item_query);
if (this.model.get('value') == item) {
$item_element.prop('checked', true);
} else {
$item_element.prop('checked', false);
}
$item_element.prop('disabled', disabled);
});
// Remove items that no longer exist.
this.$container.find('input').each(function(i, obj) {
var value = $(obj).val();
var found = false;
_.each(items, function(item, index) {
if (item == value) {
found = true;
break;
}
});
if (!found) {
$(obj).parent().remove();
}
});
var description = this.model.get('description');
if (description.length === 0) {
this.$label.hide();
} else {
this.$label.text(description);
this.$label.show();
}
}
return RadioButtonsView.__super__.update.apply(this);
},
handle_click: function (e) {
// Handle when a value is clicked.
// Calling model.set will trigger all of the other views of the
// model to update.
this.model.set('value', $(e.target).val(), {updated_view: this});
this.touch();
},
});
WidgetManager.register_widget_view('RadioButtonsView', RadioButtonsView);
var ToggleButtonsView = IPython.DOMWidgetView.extend({
render : function(){
// Called when view is rendered.
this.$el
.addClass('widget-hbox-single');
this.$label = $('<div />')
.appendTo(this.$el)
.addClass('widget-hlabel')
.hide();
this.$buttongroup = $('<div />')
.addClass('btn-group')
.attr('data-toggle', 'buttons-radio')
.appendTo(this.$el);
this.$el_to_style = this.$buttongroup; // Set default element to style
this.update();
},
update : function(options){
// Update the contents of this view
//
// Called when the model is changed. The model may have been
// changed by another view or by a state update from the back-end.
if (options === undefined || options.updated_view != this) {
// Add missing items to the DOM.
var items = this.model.get('values');
var disabled = this.model.get('disabled');
_.each(items, function(item, index) {
var item_query = ' :contains("' + item + '")';
if (this.$buttongroup.find(item_query).length === 0) {
$('<button />')
.attr('type', 'button')
.addClass('btn')
.text(item)
.appendTo(this.$buttongroup)
.on('click', $.proxy(this.handle_click, this));
}
var $item_element = this.$buttongroup.find(item_query);
if (this.model.get('value') == item) {
$item_element.addClass('active');
} else {
$item_element.removeClass('active');
}
$item_element.prop('disabled', disabled);
});
// Remove items that no longer exist.
this.$buttongroup.find('button').each(function(i, obj) {
var value = $(obj).text();
var found = false;
_.each(items, function(item, index) {
if (item == value) {
found = true;
break;
}
});
if (!found) {
$(obj).remove();
}
});
var description = this.model.get('description');
if (description.length === 0) {
this.$label.hide();
} else {
this.$label.text(description);
this.$label.show();
}
}
return ToggleButtonsView.__super__.update.apply(this);
},
handle_click: function (e) {
// Handle when a value is clicked.
// Calling model.set will trigger all of the other views of the
// model to update.
this.model.set('value', $(e.target).text(), {updated_view: this});
this.touch();
},
});
WidgetManager.register_widget_view('ToggleButtonsView', ToggleButtonsView);
var ListBoxView = IPython.DOMWidgetView.extend({
render : function(){
// Called when view is rendered.
this.$el
.addClass('widget-hbox');
this.$label = $('<div />')
.appendTo(this.$el)
.addClass('widget-hlabel')
.hide();
this.$listbox = $('<select />')
.addClass('widget-listbox')
.attr('size', 6)
.appendTo(this.$el);
this.$el_to_style = this.$listbox; // Set default element to style
this.update();
},
update : function(options){
// Update the contents of this view
//
// Called when the model is changed. The model may have been
// changed by another view or by a state update from the back-end.
if (options === undefined || options.updated_view != this) {
// Add missing items to the DOM.
var items = this.model.get('values');
_.each(items, function(item, index) {
var item_query = ' :contains("' + item + '")';
if (this.$listbox.find(item_query).length === 0) {
$('<option />')
.text(item)
.attr('value', item)
.appendTo(this.$listbox)
.on('click', $.proxy(this.handle_click, this));
}
});
// Select the correct element
this.$listbox.val(this.model.get('value'));
// Disable listbox if needed
var disabled = this.model.get('disabled');
this.$listbox.prop('disabled', disabled);
// Remove items that no longer exist.
this.$listbox.find('option').each(function(i, obj) {
var value = $(obj).text();
var found = false;
_.each(items, function(item, index) {
if (item == value) {
found = true;
break;
}
});
if (!found) {
$(obj).remove();
}
});
var description = this.model.get('description');
if (description.length === 0) {
this.$label.hide();
} else {
this.$label.text(description);
this.$label.show();
}
}
return ListBoxView.__super__.update.apply(this);
},
handle_click: function (e) {
// Handle when a value is clicked.
// Calling model.set will trigger all of the other views of the
// model to update.
this.model.set('value', $(e.target).text(), {updated_view: this});
this.touch();
},
});
WidgetManager.register_widget_view('ListBoxView', ListBoxView);
});