Add string widget

IPython/html/widgets/string/__init__.py

@@ -0,0 +1,1 b''
+from widget import StringWidget
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IPython/html/widgets/string/model.js

@@ -0,0 +1,2 b''
+var StringWidgetModel = IPython.WidgetModel.extend({});
+IPython.notebook.widget_manager.register_widget_model('StringWidgetModel', StringWidgetModel);

IPython/html/widgets/string/view_textarea.js

@@ -0,0 +1,35 b''
+var TextareaView = IPython.WidgetView.extend({
+  
+    // Called when view is rendered.
+    render : function(){
+        this.$el
+            .html('')
+            .addClass(this.model.comm.comm_id);
+        this.$textbox = $('<textarea />')
+            .attr('rows', 5)
+            .appendTo(this.$el);
+        this.update(); // Set defaults.
+    },
+    
+    // Handles: Backend -> Frontend Sync
+    //          Frontent -> Frontend Sync
+    update : function(){
+        if (!this.user_invoked_update) {
+            this.$textbox.val(this.model.get('value'));
+        }
+    },
+    
+    events: {"keyup textarea" : "handleChanging",
+            "paste textarea" : "handleChanging",
+            "cut textarea" : "handleChanging"},
+    
+    // Handles and validates user input.
+    handleChanging: function(e) { 
+        this.user_invoked_update = true;
+        this.model.set('value', e.target.value);
+        this.model.apply(this);
+        this.user_invoked_update = false;
+    },
+});
+
+IPython.notebook.widget_manager.register_widget_view('TextareaView', TextareaView);

IPython/html/widgets/string/view_textbox.js

@@ -0,0 +1,35 b''
+var TextboxView = IPython.WidgetView.extend({
+  
+    // Called when view is rendered.
+    render : function(){
+        this.$el
+            .html('')
+            .addClass(this.model.comm.comm_id);
+        this.$textbox = $('<input type="text" />')
+            .addClass('input')
+            .appendTo(this.$el);
+        this.update(); // Set defaults.
+    },
+    
+    // Handles: Backend -> Frontend Sync
+    //          Frontent -> Frontend Sync
+    update : function(){
+        if (!this.user_invoked_update) {
+            this.$textbox.val(this.model.get('value'));
+        }
+    },
+    
+    events: {"keyup input" : "handleChanging",
+            "paste input" : "handleChanging",
+            "cut input" : "handleChanging"},
+    
+    // Handles and validates user input.
+    handleChanging: function(e) { 
+        this.user_invoked_update = true;
+        this.model.set('value', e.target.value);
+        this.model.apply(this);
+        this.user_invoked_update = false;
+    },
+});
+
+IPython.notebook.widget_manager.register_widget_view('TextboxView', TextboxView);

IPython/html/widgets/string/widget.py

@@ -0,0 +1,14 b''
+import os
+
+from ..widget import Widget
+from IPython.utils.traitlets import Unicode, Bool
+from IPython.utils.javascript import display_all_js
+
+class StringWidget(Widget):
+    target_name = Unicode('StringWidgetModel')
+    default_view_name = Unicode('TextboxView')
+    _keys = ['value', 'row_count', 'disabled']
+    
+    value = Unicode()
+    disabled = Bool(False) # Enable or disable user changes
+    
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