2010-11-15 07:39:52 +00:00
|
|
|
/*
|
2011-11-08 16:40:44 +00:00
|
|
|
Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
|
2010-11-15 07:39:52 +00:00
|
|
|
Available via Academic Free License >= 2.1 OR the modified BSD license.
|
|
|
|
see: http://dojotoolkit.org/license for details
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
2011-11-08 16:40:44 +00:00
|
|
|
if(!dojo._hasResource["dijit._KeyNavContainer"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
|
|
|
|
dojo._hasResource["dijit._KeyNavContainer"] = true;
|
2010-11-15 07:39:52 +00:00
|
|
|
dojo.provide("dijit._KeyNavContainer");
|
|
|
|
dojo.require("dijit._Container");
|
2011-11-08 16:40:44 +00:00
|
|
|
|
|
|
|
|
|
|
|
dojo.declare("dijit._KeyNavContainer",
|
|
|
|
dijit._Container,
|
|
|
|
{
|
|
|
|
|
|
|
|
// summary:
|
|
|
|
// A _Container with keyboard navigation of its children.
|
|
|
|
// description:
|
|
|
|
// To use this mixin, call connectKeyNavHandlers() in
|
|
|
|
// postCreate() and call startupKeyNavChildren() in startup().
|
|
|
|
// It provides normalized keyboard and focusing code for Container
|
|
|
|
// widgets.
|
|
|
|
/*=====
|
|
|
|
// focusedChild: [protected] Widget
|
|
|
|
// The currently focused child widget, or null if there isn't one
|
|
|
|
focusedChild: null,
|
|
|
|
=====*/
|
|
|
|
|
|
|
|
// tabIndex: Integer
|
|
|
|
// Tab index of the container; same as HTML tabIndex attribute.
|
|
|
|
// Note then when user tabs into the container, focus is immediately
|
|
|
|
// moved to the first item in the container.
|
|
|
|
tabIndex: "0",
|
|
|
|
|
|
|
|
_keyNavCodes: {},
|
|
|
|
|
|
|
|
connectKeyNavHandlers: function(/*dojo.keys[]*/ prevKeyCodes, /*dojo.keys[]*/ nextKeyCodes){
|
|
|
|
// summary:
|
|
|
|
// Call in postCreate() to attach the keyboard handlers
|
|
|
|
// to the container.
|
|
|
|
// preKeyCodes: dojo.keys[]
|
|
|
|
// Key codes for navigating to the previous child.
|
|
|
|
// nextKeyCodes: dojo.keys[]
|
|
|
|
// Key codes for navigating to the next child.
|
|
|
|
// tags:
|
|
|
|
// protected
|
|
|
|
|
|
|
|
var keyCodes = (this._keyNavCodes = {});
|
|
|
|
var prev = dojo.hitch(this, this.focusPrev);
|
|
|
|
var next = dojo.hitch(this, this.focusNext);
|
|
|
|
dojo.forEach(prevKeyCodes, function(code){ keyCodes[code] = prev; });
|
|
|
|
dojo.forEach(nextKeyCodes, function(code){ keyCodes[code] = next; });
|
|
|
|
keyCodes[dojo.keys.HOME] = dojo.hitch(this, "focusFirstChild");
|
|
|
|
keyCodes[dojo.keys.END] = dojo.hitch(this, "focusLastChild");
|
|
|
|
this.connect(this.domNode, "onkeypress", "_onContainerKeypress");
|
|
|
|
this.connect(this.domNode, "onfocus", "_onContainerFocus");
|
|
|
|
},
|
|
|
|
|
|
|
|
startupKeyNavChildren: function(){
|
|
|
|
// summary:
|
|
|
|
// Call in startup() to set child tabindexes to -1
|
|
|
|
// tags:
|
|
|
|
// protected
|
|
|
|
dojo.forEach(this.getChildren(), dojo.hitch(this, "_startupChild"));
|
|
|
|
},
|
|
|
|
|
|
|
|
addChild: function(/*dijit._Widget*/ widget, /*int?*/ insertIndex){
|
|
|
|
// summary:
|
|
|
|
// Add a child to our _Container
|
|
|
|
dijit._KeyNavContainer.superclass.addChild.apply(this, arguments);
|
|
|
|
this._startupChild(widget);
|
|
|
|
},
|
|
|
|
|
|
|
|
focus: function(){
|
|
|
|
// summary:
|
|
|
|
// Default focus() implementation: focus the first child.
|
|
|
|
this.focusFirstChild();
|
|
|
|
},
|
|
|
|
|
|
|
|
focusFirstChild: function(){
|
|
|
|
// summary:
|
|
|
|
// Focus the first focusable child in the container.
|
|
|
|
// tags:
|
|
|
|
// protected
|
|
|
|
var child = this._getFirstFocusableChild();
|
|
|
|
if(child){ // edge case: Menu could be empty or hidden
|
|
|
|
this.focusChild(child);
|
|
|
|
}
|
|
|
|
},
|
|
|
|
|
|
|
|
focusLastChild: function(){
|
|
|
|
// summary:
|
|
|
|
// Focus the last focusable child in the container.
|
|
|
|
// tags:
|
|
|
|
// protected
|
|
|
|
var child = this._getLastFocusableChild();
|
|
|
|
if(child){ // edge case: Menu could be empty or hidden
|
|
|
|
this.focusChild(child);
|
|
|
|
}
|
|
|
|
},
|
|
|
|
|
|
|
|
focusNext: function(){
|
|
|
|
// summary:
|
|
|
|
// Focus the next widget
|
|
|
|
// tags:
|
|
|
|
// protected
|
|
|
|
var child = this._getNextFocusableChild(this.focusedChild, 1);
|
|
|
|
this.focusChild(child);
|
|
|
|
},
|
|
|
|
|
|
|
|
focusPrev: function(){
|
|
|
|
// summary:
|
|
|
|
// Focus the last focusable node in the previous widget
|
|
|
|
// (ex: go to the ComboButton icon section rather than button section)
|
|
|
|
// tags:
|
|
|
|
// protected
|
|
|
|
var child = this._getNextFocusableChild(this.focusedChild, -1);
|
|
|
|
this.focusChild(child, true);
|
|
|
|
},
|
|
|
|
|
|
|
|
focusChild: function(/*dijit._Widget*/ widget, /*Boolean*/ last){
|
|
|
|
// summary:
|
|
|
|
// Focus widget.
|
|
|
|
// widget:
|
|
|
|
// Reference to container's child widget
|
|
|
|
// last:
|
|
|
|
// If true and if widget has multiple focusable nodes, focus the
|
|
|
|
// last one instead of the first one
|
|
|
|
// tags:
|
|
|
|
// protected
|
|
|
|
|
|
|
|
if(this.focusedChild && widget !== this.focusedChild){
|
|
|
|
this._onChildBlur(this.focusedChild);
|
|
|
|
}
|
|
|
|
widget.set("tabIndex", this.tabIndex); // for IE focus outline to appear, must set tabIndex before focs
|
|
|
|
widget.focus(last ? "end" : "start");
|
|
|
|
this._set("focusedChild", widget);
|
|
|
|
},
|
|
|
|
|
|
|
|
_startupChild: function(/*dijit._Widget*/ widget){
|
|
|
|
// summary:
|
|
|
|
// Setup for each child widget
|
|
|
|
// description:
|
|
|
|
// Sets tabIndex=-1 on each child, so that the tab key will
|
|
|
|
// leave the container rather than visiting each child.
|
|
|
|
// tags:
|
|
|
|
// private
|
|
|
|
|
|
|
|
widget.set("tabIndex", "-1");
|
|
|
|
|
|
|
|
this.connect(widget, "_onFocus", function(){
|
|
|
|
// Set valid tabIndex so tabbing away from widget goes to right place, see #10272
|
|
|
|
widget.set("tabIndex", this.tabIndex);
|
|
|
|
});
|
|
|
|
this.connect(widget, "_onBlur", function(){
|
|
|
|
widget.set("tabIndex", "-1");
|
|
|
|
});
|
|
|
|
},
|
|
|
|
|
|
|
|
_onContainerFocus: function(evt){
|
|
|
|
// summary:
|
|
|
|
// Handler for when the container gets focus
|
|
|
|
// description:
|
|
|
|
// Initially the container itself has a tabIndex, but when it gets
|
|
|
|
// focus, switch focus to first child...
|
|
|
|
// tags:
|
|
|
|
// private
|
|
|
|
|
|
|
|
// Note that we can't use _onFocus() because switching focus from the
|
|
|
|
// _onFocus() handler confuses the focus.js code
|
|
|
|
// (because it causes _onFocusNode() to be called recursively)
|
|
|
|
|
|
|
|
// focus bubbles on Firefox,
|
|
|
|
// so just make sure that focus has really gone to the container
|
|
|
|
if(evt.target !== this.domNode){ return; }
|
|
|
|
|
|
|
|
this.focusFirstChild();
|
|
|
|
|
|
|
|
// and then set the container's tabIndex to -1,
|
|
|
|
// (don't remove as that breaks Safari 4)
|
|
|
|
// so that tab or shift-tab will go to the fields after/before
|
|
|
|
// the container, rather than the container itself
|
|
|
|
dojo.attr(this.domNode, "tabIndex", "-1");
|
|
|
|
},
|
|
|
|
|
|
|
|
_onBlur: function(evt){
|
|
|
|
// When focus is moved away the container, and its descendant (popup) widgets,
|
|
|
|
// then restore the container's tabIndex so that user can tab to it again.
|
|
|
|
// Note that using _onBlur() so that this doesn't happen when focus is shifted
|
|
|
|
// to one of my child widgets (typically a popup)
|
|
|
|
if(this.tabIndex){
|
|
|
|
dojo.attr(this.domNode, "tabIndex", this.tabIndex);
|
|
|
|
}
|
|
|
|
this.inherited(arguments);
|
|
|
|
},
|
|
|
|
|
|
|
|
_onContainerKeypress: function(evt){
|
|
|
|
// summary:
|
|
|
|
// When a key is pressed, if it's an arrow key etc. then
|
|
|
|
// it's handled here.
|
|
|
|
// tags:
|
|
|
|
// private
|
|
|
|
if(evt.ctrlKey || evt.altKey){ return; }
|
|
|
|
var func = this._keyNavCodes[evt.charOrCode];
|
|
|
|
if(func){
|
|
|
|
func();
|
|
|
|
dojo.stopEvent(evt);
|
|
|
|
}
|
|
|
|
},
|
|
|
|
|
|
|
|
_onChildBlur: function(/*dijit._Widget*/ widget){
|
|
|
|
// summary:
|
|
|
|
// Called when focus leaves a child widget to go
|
|
|
|
// to a sibling widget.
|
|
|
|
// tags:
|
|
|
|
// protected
|
|
|
|
},
|
|
|
|
|
|
|
|
_getFirstFocusableChild: function(){
|
|
|
|
// summary:
|
|
|
|
// Returns first child that can be focused
|
|
|
|
return this._getNextFocusableChild(null, 1); // dijit._Widget
|
|
|
|
},
|
|
|
|
|
|
|
|
_getLastFocusableChild: function(){
|
|
|
|
// summary:
|
|
|
|
// Returns last child that can be focused
|
|
|
|
return this._getNextFocusableChild(null, -1); // dijit._Widget
|
|
|
|
},
|
|
|
|
|
|
|
|
_getNextFocusableChild: function(child, dir){
|
|
|
|
// summary:
|
|
|
|
// Returns the next or previous focusable child, compared
|
|
|
|
// to "child"
|
|
|
|
// child: Widget
|
|
|
|
// The current widget
|
|
|
|
// dir: Integer
|
|
|
|
// * 1 = after
|
|
|
|
// * -1 = before
|
|
|
|
if(child){
|
|
|
|
child = this._getSiblingOfChild(child, dir);
|
|
|
|
}
|
|
|
|
var children = this.getChildren();
|
|
|
|
for(var i=0; i < children.length; i++){
|
|
|
|
if(!child){
|
|
|
|
child = children[(dir>0) ? 0 : (children.length-1)];
|
|
|
|
}
|
|
|
|
if(child.isFocusable()){
|
|
|
|
return child; // dijit._Widget
|
|
|
|
}
|
|
|
|
child = this._getSiblingOfChild(child, dir);
|
|
|
|
}
|
|
|
|
// no focusable child found
|
|
|
|
return null; // dijit._Widget
|
|
|
|
}
|
|
|
|
}
|
|
|
|
);
|
|
|
|
|
2010-11-15 07:39:52 +00:00
|
|
|
}
|