390 خطوط
13 KiB
JavaScript
390 خطوط
13 KiB
JavaScript
define("dijit/layout/StackController", [
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"dojo/_base/array", // array.forEach array.indexOf array.map
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"dojo/_base/declare", // declare
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"dojo/dom-class",
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"dojo/_base/event", // event.stop
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"dojo/keys", // keys
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"dojo/_base/lang", // lang.getObject
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"dojo/on",
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"../focus", // focus.focus()
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"../registry", // registry.byId
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"../_Widget",
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"../_TemplatedMixin",
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"../_Container",
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"../form/ToggleButton",
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"dojo/i18n!../nls/common"
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], function(array, declare, domClass, event, keys, lang, on,
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focus, registry, _Widget, _TemplatedMixin, _Container, ToggleButton){
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// module:
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// dijit/layout/StackController
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var StackButton = declare("dijit.layout._StackButton", ToggleButton, {
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// summary:
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// Internal widget used by StackContainer.
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// description:
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// The button-like or tab-like object you click to select or delete a page
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// tags:
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// private
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// Override _FormWidget.tabIndex.
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// StackContainer buttons are not in the tab order by default.
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// Probably we should be calling this.startupKeyNavChildren() instead.
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tabIndex: "-1",
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// closeButton: Boolean
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// When true, display close button for this tab
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closeButton: false,
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_aria_attr: "aria-selected",
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buildRendering: function(/*Event*/ evt){
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this.inherited(arguments);
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(this.focusNode || this.domNode).setAttribute("role", "tab");
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}
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});
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var StackController = declare("dijit.layout.StackController", [_Widget, _TemplatedMixin, _Container], {
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// summary:
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// Set of buttons to select a page in a `dijit/layout/StackContainer`
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// description:
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// Monitors the specified StackContainer, and whenever a page is
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// added, deleted, or selected, updates itself accordingly.
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baseClass: "dijitStackController",
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templateString: "<span role='tablist' data-dojo-attach-event='onkeypress'></span>",
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// containerId: [const] String
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// The id of the page container that I point to
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containerId: "",
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// buttonWidget: [const] Constructor
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// The button widget to create to correspond to each page
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buttonWidget: StackButton,
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// buttonWidgetCloseClass: String
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// CSS class of [x] close icon, used by event delegation code to tell when close button was clicked
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buttonWidgetCloseClass: "dijitStackCloseButton",
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constructor: function(params /*===== , srcNodeRef =====*/){
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// summary:
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// Create the widget.
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// params: Object|null
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// Hash of initialization parameters for widget, including scalar values (like title, duration etc.)
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// and functions, typically callbacks like onClick.
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// The hash can contain any of the widget's properties, excluding read-only properties.
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// srcNodeRef: DOMNode|String?
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// If a srcNodeRef (DOM node) is specified, replace srcNodeRef with my generated DOM tree
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this.pane2button = {}; // mapping from pane id to buttons
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},
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postCreate: function(){
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this.inherited(arguments);
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// Listen to notifications from StackContainer.
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// TODO: do this through bubbled events instead of topics
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this.subscribe(this.containerId+"-startup", "onStartup");
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this.subscribe(this.containerId+"-addChild", "onAddChild");
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this.subscribe(this.containerId+"-removeChild", "onRemoveChild");
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this.subscribe(this.containerId+"-selectChild", "onSelectChild");
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this.subscribe(this.containerId+"-containerKeyPress", "onContainerKeyPress");
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// Listen for click events to select or close tabs.
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// No need to worry about ENTER/SPACE key handling: tabs are selected via left/right arrow keys,
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// and closed via shift-F10 (to show the close menu).
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this.connect(this.containerNode, 'click', function(evt){
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var button = registry.getEnclosingWidget(evt.target);
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if(button != this.containerNode && !button.disabled && button.page){
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for(var target = evt.target; target !== this.containerNode; target = target.parentNode){
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if(domClass.contains(target, this.buttonWidgetCloseClass)){
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this.onCloseButtonClick(button.page);
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break;
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}else if(target == button.domNode){
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this.onButtonClick(button.page);
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break;
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}
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}
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}
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});
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},
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onStartup: function(/*Object*/ info){
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// summary:
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// Called after StackContainer has finished initializing
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// tags:
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// private
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array.forEach(info.children, this.onAddChild, this);
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if(info.selected){
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// Show button corresponding to selected pane (unless selected
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// is null because there are no panes)
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this.onSelectChild(info.selected);
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}
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// Reflect events like page title changes to tab buttons
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var containerNode = registry.byId(this.containerId).containerNode,
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pane2button = this.pane2button,
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paneToButtonAttr = {
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"title": "label",
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"showtitle": "showLabel",
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"iconclass": "iconClass",
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"closable": "closeButton",
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"tooltip": "title",
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"disabled": "disabled"
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},
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connectFunc = function(attr, buttonAttr){
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return on(containerNode, "attrmodified-" + attr, function(evt){
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var button = pane2button[evt.detail && evt.detail.widget && evt.detail.widget.id];
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if(button){
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button.set(buttonAttr, evt.detail.newValue);
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}
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});
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};
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for(var attr in paneToButtonAttr){
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this.own(connectFunc(attr, paneToButtonAttr[attr]));
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}
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},
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destroy: function(){
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// Since the buttons are internal to the StackController widget, destroy() should remove them, which is
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// done by calling onRemoveChild().
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for(var pane in this.pane2button){
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this.onRemoveChild(registry.byId(pane));
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}
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// TODO: destroyRecursive() will call destroy() on each child button twice. Once from the above code,
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// and once because _WidgetBase.destroyDescendants() deletes anything inside of this.containerNode.
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// Probably shouldn't attach that DOMNode as this.containerNode.
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this.inherited(arguments);
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},
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onAddChild: function(/*dijit/_WidgetBase*/ page, /*Integer?*/ insertIndex){
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// summary:
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// Called whenever a page is added to the container.
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// Create button corresponding to the page.
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// tags:
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// private
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// create an instance of the button widget
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// (remove typeof buttonWidget == string support in 2.0)
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var Cls = lang.isString(this.buttonWidget) ? lang.getObject(this.buttonWidget) : this.buttonWidget;
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var button = new Cls({
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id: this.id + "_" + page.id,
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name: this.id + "_" + page.id,
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label: page.title,
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disabled: page.disabled,
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ownerDocument: this.ownerDocument,
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dir: page.dir,
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lang: page.lang,
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textDir: page.textDir,
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showLabel: page.showTitle,
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iconClass: page.iconClass,
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closeButton: page.closable,
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title: page.tooltip,
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page: page
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});
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this.addChild(button, insertIndex);
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this.pane2button[page.id] = button;
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page.controlButton = button; // this value might be overwritten if two tabs point to same container
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if(!this._currentChild){
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// If this is the first child then StackContainer will soon publish that it's selected,
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// but before that StackContainer calls layout(), and before layout() is called the
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// StackController needs to have the proper height... which means that the button needs
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// to be marked as selected now. See test_TabContainer_CSS.html for test.
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this.onSelectChild(page);
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}
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},
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onRemoveChild: function(/*dijit/_WidgetBase*/ page){
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// summary:
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// Called whenever a page is removed from the container.
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// Remove the button corresponding to the page.
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// tags:
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// private
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if(this._currentChild === page){ this._currentChild = null; }
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var button = this.pane2button[page.id];
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if(button){
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this.removeChild(button);
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delete this.pane2button[page.id];
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button.destroy();
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}
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delete page.controlButton;
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},
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onSelectChild: function(/*dijit/_WidgetBase*/ page){
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// summary:
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// Called when a page has been selected in the StackContainer, either by me or by another StackController
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// tags:
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// private
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if(!page){ return; }
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if(this._currentChild){
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var oldButton=this.pane2button[this._currentChild.id];
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oldButton.set('checked', false);
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oldButton.focusNode.setAttribute("tabIndex", "-1");
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}
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var newButton=this.pane2button[page.id];
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newButton.set('checked', true);
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this._currentChild = page;
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newButton.focusNode.setAttribute("tabIndex", "0");
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var container = registry.byId(this.containerId);
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container.containerNode.setAttribute("aria-labelledby", newButton.id);
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},
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onButtonClick: function(/*dijit/_WidgetBase*/ page){
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// summary:
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// Called whenever one of my child buttons is pressed in an attempt to select a page
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// tags:
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// private
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var button = this.pane2button[page.id];
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// For TabContainer where the tabs are <span>, need to set focus explicitly when left/right arrow
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focus.focus(button.focusNode);
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if(this._currentChild && this._currentChild.id === page.id) {
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//In case the user clicked the checked button, keep it in the checked state because it remains to be the selected stack page.
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button.set('checked', true);
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}
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var container = registry.byId(this.containerId);
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container.selectChild(page);
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},
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onCloseButtonClick: function(/*dijit/_WidgetBase*/ page){
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// summary:
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// Called whenever one of my child buttons [X] is pressed in an attempt to close a page
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// tags:
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// private
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var container = registry.byId(this.containerId);
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container.closeChild(page);
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if(this._currentChild){
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var b = this.pane2button[this._currentChild.id];
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if(b){
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focus.focus(b.focusNode || b.domNode);
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}
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}
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},
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// TODO: this is a bit redundant with forward, back api in StackContainer
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adjacent: function(/*Boolean*/ forward){
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// summary:
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// Helper for onkeypress to find next/previous button
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// tags:
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// private
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if(!this.isLeftToRight() && (!this.tabPosition || /top|bottom/.test(this.tabPosition))){ forward = !forward; }
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// find currently focused button in children array
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var children = this.getChildren();
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var idx = array.indexOf(children, this.pane2button[this._currentChild.id]),
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current = children[idx];
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// Pick next/previous non-disabled button to focus on. If we get back to the original button it means
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// that all buttons must be disabled, so return current child to avoid an infinite loop.
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var child;
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do{
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idx = (idx + (forward ? 1 : children.length - 1)) % children.length;
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child = children[idx];
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}while(child.disabled && child != current);
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return child; // dijit/_WidgetBase
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},
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onkeypress: function(/*Event*/ e){
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// summary:
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// Handle keystrokes on the page list, for advancing to next/previous button
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// and closing the current page if the page is closable.
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// tags:
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// private
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if(this.disabled || e.altKey ){ return; }
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var forward = null;
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if(e.ctrlKey || !e._djpage){
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switch(e.charOrCode){
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case keys.LEFT_ARROW:
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case keys.UP_ARROW:
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if(!e._djpage){ forward = false; }
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break;
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case keys.PAGE_UP:
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if(e.ctrlKey){ forward = false; }
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break;
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case keys.RIGHT_ARROW:
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case keys.DOWN_ARROW:
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if(!e._djpage){ forward = true; }
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break;
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case keys.PAGE_DOWN:
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if(e.ctrlKey){ forward = true; }
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break;
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case keys.HOME:
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// Navigate to first non-disabled child
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var children = this.getChildren();
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for(var idx = 0; idx < children.length; idx++){
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var child = children[idx];
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if(!child.disabled){
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this.onButtonClick(child.page);
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break;
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}
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}
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event.stop(e);
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break;
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case keys.END:
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// Navigate to last non-disabled child
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var children = this.getChildren();
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for(var idx = children.length-1; idx >= 0; idx--){
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var child = children[idx];
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if(!child.disabled){
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this.onButtonClick(child.page);
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break;
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}
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}
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event.stop(e);
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break;
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case keys.DELETE:
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if(this._currentChild.closable){
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this.onCloseButtonClick(this._currentChild);
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}
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event.stop(e);
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break;
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default:
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if(e.ctrlKey){
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if(e.charOrCode === keys.TAB){
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this.onButtonClick(this.adjacent(!e.shiftKey).page);
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event.stop(e);
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}else if(e.charOrCode == "w"){
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if(this._currentChild.closable){
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this.onCloseButtonClick(this._currentChild);
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}
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event.stop(e); // avoid browser tab closing.
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}
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}
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}
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// handle next/previous page navigation (left/right arrow, etc.)
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if(forward !== null){
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this.onButtonClick(this.adjacent(forward).page);
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event.stop(e);
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}
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}
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},
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onContainerKeyPress: function(/*Object*/ info){
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// summary:
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// Called when there was a keypress on the container
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// tags:
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// private
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info.e._djpage = info.page;
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this.onkeypress(info.e);
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}
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});
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StackController.StackButton = StackButton; // for monkey patching
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return StackController;
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});
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