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292 lines
9.5 KiB
JavaScript
292 lines
9.5 KiB
JavaScript
dojo.provide("dijit.layout.StackController");
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dojo.require("dijit._Widget");
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dojo.require("dijit._Templated");
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dojo.require("dijit._Container");
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dojo.require("dijit.form.ToggleButton");
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dojo.require("dijit.Menu");
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dojo.requireLocalization("dijit", "common");
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dojo.declare(
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"dijit.layout.StackController",
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[dijit._Widget, dijit._Templated, dijit._Container],
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{
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// summary:
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// Set of buttons to select a page in a page list.
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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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templateString: "<span wairole='tablist' dojoAttachEvent='onkeypress' class='dijitStackController'></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] String
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// The name of the button widget to create to correspond to each page
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buttonWidget: "dijit.layout._StackButton",
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postCreate: function(){
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dijit.setWaiRole(this.domNode, "tablist");
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// TODO: change key from object to id, to get more separation from StackContainer
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this.pane2button = {}; // mapping from panes to buttons
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this.pane2handles = {}; // mapping from panes to dojo.connect() handles
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this.pane2menu = {}; // mapping from panes to close menu
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this._subscriptions=[
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dojo.subscribe(this.containerId+"-startup", this, "onStartup"),
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dojo.subscribe(this.containerId+"-addChild", this, "onAddChild"),
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dojo.subscribe(this.containerId+"-removeChild", this, "onRemoveChild"),
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dojo.subscribe(this.containerId+"-selectChild", this, "onSelectChild"),
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dojo.subscribe(this.containerId+"-containerKeyPress", this, "onContainerKeyPress")
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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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dojo.forEach(info.children, this.onAddChild, this);
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this.onSelectChild(info.selected);
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},
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destroy: function(){
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for(var pane in this.pane2button){
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this.onRemoveChild(pane);
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}
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dojo.forEach(this._subscriptions, dojo.unsubscribe);
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this.inherited(arguments);
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},
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onAddChild: function(/*Widget*/ 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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// add a node that will be promoted to the button widget
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var refNode = dojo.doc.createElement("span");
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this.domNode.appendChild(refNode);
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// create an instance of the button widget
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var cls = dojo.getObject(this.buttonWidget);
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var button = new cls({label: page.title, closeButton: page.closable}, refNode);
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this.addChild(button, insertIndex);
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this.pane2button[page] = button;
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page.controlButton = button; // this value might be overwritten if two tabs point to same container
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var handles = [];
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handles.push(dojo.connect(button, "onClick", dojo.hitch(this,"onButtonClick",page)));
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if(page.closable){
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handles.push(dojo.connect(button, "onClickCloseButton", dojo.hitch(this,"onCloseButtonClick",page)));
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// add context menu onto title button
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var _nlsResources = dojo.i18n.getLocalization("dijit", "common");
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var closeMenu = new dijit.Menu({targetNodeIds:[button.id], id:button.id+"_Menu"});
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var mItem = new dijit.MenuItem({label:_nlsResources.itemClose});
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handles.push(dojo.connect(mItem, "onClick", dojo.hitch(this, "onCloseButtonClick", page)));
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closeMenu.addChild(mItem);
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this.pane2menu[page] = closeMenu;
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}
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this.pane2handles[page] = handles;
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if(!this._currentChild){ // put the first child into the tab order
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button.focusNode.setAttribute("tabIndex", "0");
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this._currentChild = page;
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}
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//make sure all tabs have the same length
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if(!this.isLeftToRight() && dojo.isIE && this._rectifyRtlTabList){
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this._rectifyRtlTabList();
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}
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},
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onRemoveChild: function(/*Widget*/ 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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dojo.forEach(this.pane2handles[page], dojo.disconnect);
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delete this.pane2handles[page];
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var menu = this.pane2menu[page];
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if (menu){
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menu.destroyRecursive();
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delete this.pane2menu[page];
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}
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var button = this.pane2button[page];
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if(button){
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// TODO? if current child { reassign }
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button.destroy();
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delete this.pane2button[page];
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}
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},
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onSelectChild: function(/*Widget*/ 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];
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oldButton.attr('checked', false);
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oldButton.focusNode.setAttribute("tabIndex", "-1");
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}
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var newButton=this.pane2button[page];
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newButton.attr('checked', true);
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this._currentChild = page;
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newButton.focusNode.setAttribute("tabIndex", "0");
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var container = dijit.byId(this.containerId);
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dijit.setWaiState(container.containerNode, "labelledby", newButton.id);
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},
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onButtonClick: function(/*Widget*/ 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 container = dijit.byId(this.containerId); // TODO: do this via topics?
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container.selectChild(page);
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},
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onCloseButtonClick: function(/*Widget*/ 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 = dijit.byId(this.containerId);
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container.closeChild(page);
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var b = this.pane2button[this._currentChild];
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if(b){
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dijit.focus(b.focusNode || b.domNode);
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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 current = dojo.indexOf(children, this.pane2button[this._currentChild]);
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// pick next button to focus on
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var offset = forward ? 1 : children.length - 1;
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return children[ (current + offset) % children.length ]; // dijit._Widget
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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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var k = dojo.keys;
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switch(e.charOrCode){
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case k.LEFT_ARROW:
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case k.UP_ARROW:
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if(!e._djpage){ forward = false; }
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break;
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case k.PAGE_UP:
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if(e.ctrlKey){ forward = false; }
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break;
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case k.RIGHT_ARROW:
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case k.DOWN_ARROW:
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if(!e._djpage){ forward = true; }
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break;
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case k.PAGE_DOWN:
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if(e.ctrlKey){ forward = true; }
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break;
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case k.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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dojo.stopEvent(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 === k.TAB){
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this.adjacent(!e.shiftKey).onClick();
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dojo.stopEvent(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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dojo.stopEvent(e); // avoid browser tab closing.
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}
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}
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}
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// handle page navigation
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if(forward !== null){
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this.adjacent(forward).onClick();
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dojo.stopEvent(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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dojo.declare("dijit.layout._StackButton",
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dijit.form.ToggleButton,
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{
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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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// TODO: unclear if we need this; doesn't _KeyNavContainer (superclass of StackController) do it for us?
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tabIndex: "-1",
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postCreate: function(/*Event*/ evt){
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dijit.setWaiRole((this.focusNode || this.domNode), "tab");
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this.inherited(arguments);
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},
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onClick: function(/*Event*/ evt){
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// summary:
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// This is for TabContainer where the tabs are <span> rather than button,
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// so need to set focus explicitly (on some browsers)
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// Note that you shouldn't override this method, but you can connect to it.
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dijit.focus(this.focusNode);
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// ... now let StackController catch the event and tell me what to do
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},
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onClickCloseButton: function(/*Event*/ evt){
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// summary:
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// StackContainer connects to this function; if your widget contains a close button
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// then clicking it should call this function.
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// Note that you shouldn't override this method, but you can connect to it.
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evt.stopPropagation();
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}
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});
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