mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
b9078f64cc
--HG-- rename : accessible/tests/mochitest/events_scroll.html => accessible/tests/mochitest/events/scroll.html rename : accessible/tests/mochitest/events/test_focus.html => accessible/tests/mochitest/events/test_focus_name.html
954 lines
26 KiB
JavaScript
954 lines
26 KiB
JavaScript
////////////////////////////////////////////////////////////////////////////////
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// Constants
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const EVENT_DOCUMENT_LOAD_COMPLETE = nsIAccessibleEvent.EVENT_DOCUMENT_LOAD_COMPLETE;
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const EVENT_HIDE = nsIAccessibleEvent.EVENT_HIDE;
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const EVENT_FOCUS = nsIAccessibleEvent.EVENT_FOCUS;
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const EVENT_NAME_CHANGE = nsIAccessibleEvent.EVENT_NAME_CHANGE;
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const EVENT_REORDER = nsIAccessibleEvent.EVENT_REORDER;
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const EVENT_SCROLLING_START = nsIAccessibleEvent.EVENT_SCROLLING_START;
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const EVENT_SHOW = nsIAccessibleEvent.EVENT_SHOW;
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const EVENT_STATE_CHANGE = nsIAccessibleEvent.EVENT_STATE_CHANGE;
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const EVENT_TEXT_CARET_MOVED = nsIAccessibleEvent.EVENT_TEXT_CARET_MOVED;
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////////////////////////////////////////////////////////////////////////////////
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// General
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/**
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* Set up this variable to dump events into DOM.
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*/
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var gA11yEventDumpID = "";
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/**
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* Executes the function when requested event is handled.
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*
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* @param aEventType [in] event type
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* @param aTarget [in] event target
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* @param aFunc [in] function to call when event is handled
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* @param aContext [in, optional] object in which context the function is
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* called
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* @param aArg1 [in, optional] argument passed into the function
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* @param aArg2 [in, optional] argument passed into the function
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*/
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function waitForEvent(aEventType, aTarget, aFunc, aContext, aArg1, aArg2)
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{
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var handler = {
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handleEvent: function handleEvent(aEvent) {
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if (aTarget) {
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if (aTarget instanceof nsIAccessible &&
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aTarget != aEvent.accessible)
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return;
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if (aTarget instanceof nsIDOMNode &&
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aTarget != aEvent.DOMNode)
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return;
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}
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unregisterA11yEventListener(aEventType, this);
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window.setTimeout(
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function ()
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{
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aFunc.call(aContext, aArg1, aArg2);
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},
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0
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);
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}
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};
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registerA11yEventListener(aEventType, handler);
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}
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/**
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* Register accessibility event listener.
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*
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* @param aEventType the accessible event type (see nsIAccessibleEvent for
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* available constants).
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* @param aEventHandler event listener object, when accessible event of the
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* given type is handled then 'handleEvent' method of
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* this object is invoked with nsIAccessibleEvent object
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* as the first argument.
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*/
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function registerA11yEventListener(aEventType, aEventHandler)
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{
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listenA11yEvents(true);
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addA11yEventListener(aEventType, aEventHandler);
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}
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/**
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* Unregister accessibility event listener. Must be called for every registered
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* event listener (see registerA11yEventListener() function) when the listener
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* is not needed.
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*/
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function unregisterA11yEventListener(aEventType, aEventHandler)
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{
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removeA11yEventListener(aEventType, aEventHandler);
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listenA11yEvents(false);
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}
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////////////////////////////////////////////////////////////////////////////////
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// Event queue
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/**
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* Return value of invoke method of invoker object. Indicates invoker was unable
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* to prepare action.
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*/
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const INVOKER_ACTION_FAILED = 1;
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/**
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* Return value of eventQueue.onFinish. Indicates eventQueue should not finish
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* tests.
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*/
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const DO_NOT_FINISH_TEST = 1;
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/**
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* Creates event queue for the given event type. The queue consists of invoker
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* objects, each of them generates the event of the event type. When queue is
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* started then every invoker object is asked to generate event after timeout.
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* When event is caught then current invoker object is asked to check whether
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* event was handled correctly.
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*
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* Invoker interface is:
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*
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* var invoker = {
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* // Generates accessible event or event sequence. If returns
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* // INVOKER_ACTION_FAILED constant then stop tests.
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* invoke: function(){},
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*
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* // [optional] Invoker's check of handled event for correctness.
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* check: function(aEvent){},
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*
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* // [optional] Is called when event of registered type is handled.
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* debugCheck: function(aEvent){},
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*
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* // [ignored if 'eventSeq' is defined] DOM node event is generated for
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* // (used in the case when invoker expects single event).
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* DOMNode getter: function() {},
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*
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* // Array of checker objects defining expected events on invoker's action.
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* //
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* // Checker object interface:
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* //
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* // var checker = {
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* // type getter: function() {}, // DOM or a11y event type
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* // target getter: function() {}, // DOM node or accessible
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* // phase getter: function() {}, // DOM event phase (false - bubbling)
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* // check: function(aEvent) {},
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* // getID: function() {}
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* // };
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* eventSeq getter() {},
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*
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* // Array of checker objects defining unexpected events on invoker's
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* // action.
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* unexpectedEventSeq getter() {},
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*
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* // The ID of invoker.
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* getID: function(){} // returns invoker ID
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* };
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*
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* @param aEventType [in, optional] the default event type (isn't used if
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* invoker defines eventSeq property).
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*/
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function eventQueue(aEventType)
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{
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// public
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/**
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* Add invoker object into queue.
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*/
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this.push = function eventQueue_push(aEventInvoker)
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{
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this.mInvokers.push(aEventInvoker);
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}
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/**
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* Start the queue processing.
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*/
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this.invoke = function eventQueue_invoke()
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{
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listenA11yEvents(true);
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// XXX: Intermittent test_events_caretmove.html fails withouth timeout,
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// see bug 474952.
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this.processNextInvokerInTimeout(true);
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}
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/**
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* This function is called when all events in the queue were handled.
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* Override it if you need to be notified of this.
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*/
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this.onFinish = function eventQueue_finish()
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{
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}
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// private
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/**
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* Process next invoker.
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*/
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this.processNextInvoker = function eventQueue_processNextInvoker()
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{
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// Finish processing of the current invoker.
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var testFailed = false;
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var invoker = this.getInvoker();
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if (invoker) {
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if ("finalCheck" in invoker)
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invoker.finalCheck();
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if (invoker.wasCaught) {
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for (var idx = 0; idx < invoker.wasCaught.length; idx++) {
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var id = this.getEventID(idx);
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var type = this.getEventType(idx);
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var unexpected = this.mEventSeq[idx].unexpected;
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var typeStr = (typeof type == "string") ?
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type : gAccRetrieval.getStringEventType(type);
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var msg = "test with ID = '" + id + "' failed. ";
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if (unexpected) {
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var wasCaught = invoker.wasCaught[idx];
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if (!testFailed)
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testFailed = wasCaught;
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ok(!wasCaught,
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msg + "There is unexpected " + typeStr + " event.");
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} else {
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var wasCaught = invoker.wasCaught[idx];
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if (!testFailed)
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testFailed = !wasCaught;
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ok(wasCaught,
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msg + "No " + typeStr + " event.");
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}
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}
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} else {
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testFailed = true;
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for (var idx = 0; idx < this.mEventSeq.length; idx++) {
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var id = this.getEventID(idx);
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ok(false,
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"test with ID = '" + id + "' failed. No events were registered.");
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}
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}
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}
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this.clearEventHandler();
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// Check if need to stop the test.
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if (testFailed || this.mIndex == this.mInvokers.length - 1) {
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listenA11yEvents(false);
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var res = this.onFinish();
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if (res != DO_NOT_FINISH_TEST)
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SimpleTest.finish();
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return;
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}
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// Start processing of next invoker.
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invoker = this.getNextInvoker();
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this.setEventHandler(invoker);
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if (invoker.invoke() == INVOKER_ACTION_FAILED) {
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// Invoker failed to prepare action, fail and finish tests.
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this.processNextInvoker();
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return;
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}
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if (this.areAllEventsUnexpected())
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this.processNextInvokerInTimeout(true);
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}
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this.processNextInvokerInTimeout = function eventQueue_processNextInvokerInTimeout(aUncondProcess)
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{
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if (!aUncondProcess && this.areAllEventsExpected()) {
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// We need delay to avoid events coalesce from different invokers.
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var queue = this;
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SimpleTest.executeSoon(function() { queue.processNextInvoker(); });
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return;
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}
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// Check in timeout invoker didn't fire registered events.
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window.setTimeout(function(aQueue) { aQueue.processNextInvoker(); }, 500,
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this);
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}
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/**
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* Handle events for the current invoker.
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*/
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this.handleEvent = function eventQueue_handleEvent(aEvent)
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{
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var invoker = this.getInvoker();
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if (!invoker) // skip events before test was started
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return;
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if (!this.mEventSeq) {
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// Bad invoker object, error will be reported before processing of next
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// invoker in the queue.
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this.processNextInvoker();
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return;
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}
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if ("debugCheck" in invoker)
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invoker.debugCheck(aEvent);
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// Search through unexpected events to ensure no one of them was handled.
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for (var idx = 0; idx < this.mEventSeq.length; idx++) {
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if (this.mEventSeq[idx].unexpected && this.compareEvents(idx, aEvent))
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invoker.wasCaught[idx] = true;
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}
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// Wait for next expected event in an order specified by event sequence.
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// Compute next expected event index.
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for (var idx = this.mEventSeqIdx + 1;
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idx < this.mEventSeq.length && this.mEventSeq[idx].unexpected; idx++);
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if (idx == this.mEventSeq.length) {
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// There is no expected events in the sequence.
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this.processNextInvokerInTimeout();
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return;
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}
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var matched = this.compareEvents(idx, aEvent);
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this.dumpEventToDOM(aEvent, idx, matched);
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if (matched) {
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this.checkEvent(idx, aEvent);
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invoker.wasCaught[idx] = true;
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// The last event is expected and was handled, proceed next invoker.
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if (idx == this.mEventSeq.length - 1) {
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this.processNextInvokerInTimeout();
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return;
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}
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this.mEventSeqIdx = idx;
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}
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}
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// Helpers
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this.getInvoker = function eventQueue_getInvoker()
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{
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return this.mInvokers[this.mIndex];
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}
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this.getNextInvoker = function eventQueue_getNextInvoker()
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{
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return this.mInvokers[++this.mIndex];
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}
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this.setEventHandler = function eventQueue_setEventHandler(aInvoker)
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{
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// Create unique event sequence concatenating expected and unexpected
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// events.
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this.mEventSeq = ("eventSeq" in aInvoker) ?
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aInvoker.eventSeq :
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[ new invokerChecker(this.mDefEventType, aInvoker.DOMNode) ];
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for (var idx = 0; idx < this.mEventSeq.length; idx++)
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this.mEventSeq[idx].unexpected = false;
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var unexpectedSeq = aInvoker.unexpectedEventSeq;
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if (unexpectedSeq) {
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for (var idx = 0; idx < unexpectedSeq.length; idx++)
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unexpectedSeq[idx].unexpected = true;
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this.mEventSeq = this.mEventSeq.concat(unexpectedSeq);
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}
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this.mEventSeqIdx = -1;
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// Register event listeners
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if (this.mEventSeq) {
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aInvoker.wasCaught = new Array(this.mEventSeq.length);
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for (var idx = 0; idx < this.mEventSeq.length; idx++) {
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var eventType = this.getEventType(idx);
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if (typeof eventType == "string") {
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// DOM event
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var target = this.getEventTarget(idx);
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var phase = this.getEventPhase(idx);
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target.ownerDocument.addEventListener(eventType, this, phase);
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} else {
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// A11y event
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addA11yEventListener(eventType, this);
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}
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}
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}
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}
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this.clearEventHandler = function eventQueue_clearEventHandler()
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{
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if (this.mEventSeq) {
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for (var idx = 0; idx < this.mEventSeq.length; idx++) {
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var eventType = this.getEventType(idx);
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if (typeof eventType == "string") {
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// DOM event
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var target = this.getEventTarget(idx);
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var phase = this.getEventPhase(idx);
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target.ownerDocument.removeEventListener(eventType, this, phase);
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} else {
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// A11y event
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removeA11yEventListener(eventType, this);
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}
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}
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this.mEventSeq = null;
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}
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}
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this.getEventType = function eventQueue_getEventType(aIdx)
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{
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return this.mEventSeq[aIdx].type;
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}
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this.getEventTarget = function eventQueue_getEventTarget(aIdx)
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{
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return this.mEventSeq[aIdx].target;
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}
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this.getEventPhase = function eventQueue_getEventPhase(aIdx)
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{
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var eventItem = this.mEventSeq[aIdx];
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if ("phase" in eventItem)
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return eventItem.phase;
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return true;
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}
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this.getEventID = function eventQueue_getEventID(aIdx)
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{
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var eventItem = this.mEventSeq[aIdx];
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if ("getID" in eventItem)
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return eventItem.getID();
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var invoker = this.getInvoker();
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return invoker.getID();
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}
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this.compareEvents = function eventQueue_compareEvents(aIdx, aEvent)
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{
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var eventType1 = this.getEventType(aIdx);
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var eventType2 = (aEvent instanceof nsIDOMEvent) ?
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aEvent.type : aEvent.eventType;
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if (eventType1 != eventType2)
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return false;
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var target1 = this.getEventTarget(aIdx);
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if (target1 instanceof nsIAccessible) {
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var target2 = (aEvent instanceof nsIDOMEvent) ?
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getAccessible(aEvent.target) : aEvent.accessible;
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return target1 == target2;
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}
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// If original target isn't suitable then extend interface to support target
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// (original target is used in test_elm_media.html).
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var target2 = (aEvent instanceof nsIDOMEvent) ?
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aEvent.originalTarget : aEvent.DOMNode;
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return target1 == target2;
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}
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this.checkEvent = function eventQueue_checkEvent(aIdx, aEvent)
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{
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var eventItem = this.mEventSeq[aIdx];
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if ("check" in eventItem)
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eventItem.check(aEvent);
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var invoker = this.getInvoker();
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if ("check" in invoker)
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invoker.check(aEvent);
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}
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this.areAllEventsExpected = function eventQueue_areAllEventsExpected()
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{
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for (var idx = 0; idx < this.mEventSeq.length; idx++) {
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if (this.mEventSeq[idx].unexpected)
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return false;
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}
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return true;
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}
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this.areAllEventsUnexpected = function eventQueue_areAllEventsUnxpected()
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{
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for (var idx = 0; idx < this.mEventSeq.length; idx++) {
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if (!this.mEventSeq[idx].unexpected)
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return false;
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}
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return true;
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}
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this.dumpEventToDOM = function eventQueue_dumpEventToDOM(aOrigEvent,
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aExpectedEventIdx,
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aMatch)
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{
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if (!gA11yEventDumpID) // debug stuff
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return;
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// Dump DOM event information. Skip a11y event since it is dumped by
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// gA11yEventObserver.
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if (aOrigEvent instanceof nsIDOMEvent) {
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var info = "Event type: " + aOrigEvent.type;
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info += ". Target: " + prettyName(aOrigEvent.originalTarget);
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dumpInfoToDOM(info);
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}
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var currType = this.getEventType(aExpectedEventIdx);
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var currTarget = this.getEventTarget(aExpectedEventIdx);
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var info = "EQ: " + (aMatch ? "matched" : "expected") + " event, type: ";
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info += (typeof currType == "string") ?
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currType : eventTypeToString(currType);
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info += ". Target: " + prettyName(currTarget);
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dumpInfoToDOM(info);
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}
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this.mDefEventType = aEventType;
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this.mInvokers = new Array();
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this.mIndex = -1;
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this.mEventSeq = null;
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this.mEventSeqIdx = -1;
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}
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////////////////////////////////////////////////////////////////////////////////
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// Action sequence
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/**
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* Deal with action sequence. Used when you need to execute couple of actions
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* each after other one.
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*/
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function sequence()
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{
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/**
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* Append new sequence item.
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*
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* @param aProcessor [in] object implementing interface
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* {
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* // execute item action
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* process: function() {},
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* // callback, is called when item was processed
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* onProcessed: function() {}
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* };
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* @param aEventType [in] event type of expected event on item action
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* @param aTarget [in] event target of expected event on item action
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* @param aItemID [in] identifier of item
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*/
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|
this.append = function sequence_append(aProcessor, aEventType, aTarget,
|
|
aItemID)
|
|
{
|
|
var item = new sequenceItem(aProcessor, aEventType, aTarget, aItemID);
|
|
this.items.push(item);
|
|
}
|
|
|
|
/**
|
|
* Process next sequence item.
|
|
*/
|
|
this.processNext = function sequence_processNext()
|
|
{
|
|
this.idx++;
|
|
if (this.idx >= this.items.length) {
|
|
ok(false, "End of sequence: nothing to process!");
|
|
SimpleTest.finish();
|
|
return;
|
|
}
|
|
|
|
this.items[this.idx].startProcess();
|
|
}
|
|
|
|
this.items = new Array();
|
|
this.idx = -1;
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Event queue invokers
|
|
|
|
/**
|
|
* Invokers defined below take a checker object implementing 'check' method
|
|
* which will be called when proper event is handled. Invokers listen default
|
|
* event type registered in event queue object until it is passed explicetly.
|
|
*
|
|
* Note, checker object is optional.
|
|
* Note, you don't need to initialize 'target' and 'type' members of checker
|
|
* object. The 'target' member will be initialized by invoker object and you are
|
|
* free to use it in 'check' method.
|
|
*/
|
|
|
|
/**
|
|
* Click invoker.
|
|
*/
|
|
function synthClick(aNodeOrID, aChecker, aEventType)
|
|
{
|
|
this.__proto__ = new synthAction(aNodeOrID, aChecker, aEventType);
|
|
|
|
this.invoke = function synthClick_invoke()
|
|
{
|
|
// Scroll the node into view, otherwise synth click may fail.
|
|
this.DOMNode.scrollIntoView(true);
|
|
|
|
synthesizeMouse(this.DOMNode, 1, 1, {});
|
|
}
|
|
|
|
this.getID = function synthClick_getID()
|
|
{
|
|
return prettyName(aNodeOrID) + " click";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* General key press invoker.
|
|
*/
|
|
function synthKey(aNodeOrID, aKey, aArgs, aChecker, aEventType)
|
|
{
|
|
this.__proto__ = new synthAction(aNodeOrID, aChecker, aEventType);
|
|
|
|
this.invoke = function synthKey_invoke()
|
|
{
|
|
synthesizeKey(this.mKey, this.mArgs);
|
|
}
|
|
|
|
this.getID = function synthKey_getID()
|
|
{
|
|
return prettyName(aNodeOrID) + " '" + this.mKey + "' key";
|
|
}
|
|
|
|
this.mKey = aKey;
|
|
this.mArgs = aArgs ? aArgs : {};
|
|
}
|
|
|
|
/**
|
|
* Tab key invoker.
|
|
*/
|
|
function synthTab(aNodeOrID, aChecker, aEventType)
|
|
{
|
|
this.__proto__ = new synthKey(aNodeOrID, "VK_TAB", { shiftKey: false },
|
|
aChecker, aEventType);
|
|
|
|
this.getID = function synthTab_getID()
|
|
{
|
|
return prettyName(aNodeOrID) + " tab";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Shift tab key invoker.
|
|
*/
|
|
function synthShiftTab(aNodeOrID, aChecker, aEventType)
|
|
{
|
|
this.__proto__ = new synthKey(aNodeOrID, "VK_TAB", { shiftKey: true },
|
|
aChecker, aEventType);
|
|
|
|
this.getID = function synthTabTest_getID()
|
|
{
|
|
return prettyName(aNodeOrID) + " shift tab";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Down arrow key invoker.
|
|
*/
|
|
function synthDownKey(aNodeOrID, aChecker, aEventType)
|
|
{
|
|
this.__proto__ = new synthKey(aNodeOrID, "VK_DOWN", null, aChecker,
|
|
aEventType);
|
|
|
|
this.getID = function synthDownKey_getID()
|
|
{
|
|
return prettyName(aNodeOrID) + " key down";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Right arrow key invoker.
|
|
*/
|
|
function synthRightKey(aNodeOrID, aChecker, aEventType)
|
|
{
|
|
this.__proto__ = new synthKey(aNodeOrID, "VK_RIGHT", null, aChecker,
|
|
aEventType);
|
|
|
|
this.getID = function synthRightKey_getID()
|
|
{
|
|
return prettyName(aNodeOrID) + " key right";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Home key invoker.
|
|
*/
|
|
function synthHomeKey(aNodeOrID, aChecker, aEventType)
|
|
{
|
|
this.__proto__ = new synthKey(aNodeOrID, "VK_HOME", null, aChecker,
|
|
aEventType);
|
|
|
|
this.getID = function synthHomeKey_getID()
|
|
{
|
|
return prettyName(aNodeOrID) + " key home";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Focus invoker.
|
|
*/
|
|
function synthFocus(aNodeOrID, aChecker, aEventType)
|
|
{
|
|
this.__proto__ = new synthAction(aNodeOrID, aChecker, aEventType);
|
|
|
|
this.invoke = function synthFocus_invoke()
|
|
{
|
|
this.DOMNode.focus();
|
|
}
|
|
|
|
this.getID = function synthFocus_getID()
|
|
{
|
|
return prettyName(aNodeOrID) + " focus";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Select all invoker.
|
|
*/
|
|
function synthSelectAll(aNodeOrID, aChecker, aEventType)
|
|
{
|
|
this.__proto__ = new synthAction(aNodeOrID, aChecker, aEventType);
|
|
|
|
this.invoke = function synthSelectAll_invoke()
|
|
{
|
|
if (this.DOMNode instanceof Components.interfaces.nsIDOMHTMLInputElement)
|
|
this.DOMNode.select();
|
|
else
|
|
window.getSelection().selectAllChildren(this.DOMNode);
|
|
}
|
|
|
|
this.getID = function synthSelectAll_getID()
|
|
{
|
|
return aNodeOrID + " selectall";
|
|
}
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Event queue checkers
|
|
|
|
/**
|
|
* Common invoker checker (see eventSeq of eventQueue).
|
|
*/
|
|
function invokerChecker(aEventType, aTarget)
|
|
{
|
|
this.type = aEventType;
|
|
this.target = aTarget;
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Private implementation details.
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// General
|
|
|
|
var gA11yEventListeners = {};
|
|
var gA11yEventApplicantsCount = 0;
|
|
|
|
var gA11yEventObserver =
|
|
{
|
|
// The service reference needs to live in the observer, instead of as a global var,
|
|
// to be available in observe() catch case too.
|
|
observerService :
|
|
Components.classes["@mozilla.org/observer-service;1"]
|
|
.getService(nsIObserverService),
|
|
|
|
observe: function observe(aSubject, aTopic, aData)
|
|
{
|
|
if (aTopic != "accessible-event")
|
|
return;
|
|
|
|
var event;
|
|
try {
|
|
event = aSubject.QueryInterface(nsIAccessibleEvent);
|
|
} catch (ex) {
|
|
// After a test is aborted (i.e. timed out by the harness), this exception is soon triggered.
|
|
// Remove the leftover observer, otherwise it "leaks" to all the following tests.
|
|
this.observerService.removeObserver(this, "accessible-event");
|
|
// Forward the exception, with added explanation.
|
|
throw "[accessible/events.js, gA11yEventObserver.observe] This is expected if a previous test has been aborted... Initial exception was: [ " + ex + " ]";
|
|
}
|
|
var listenersArray = gA11yEventListeners[event.eventType];
|
|
|
|
if (gA11yEventDumpID) { // debug stuff
|
|
var target = event.DOMNode;
|
|
var dumpElm = document.getElementById(gA11yEventDumpID);
|
|
|
|
var parent = target;
|
|
while (parent && parent != dumpElm)
|
|
parent = parent.parentNode;
|
|
|
|
if (parent != dumpElm) {
|
|
var type = eventTypeToString(event.eventType);
|
|
var info = "Event type: " + type;
|
|
info += ". Target: " + prettyName(event.accessible);
|
|
|
|
if (listenersArray)
|
|
info += ". Listeners count: " + listenersArray.length;
|
|
|
|
dumpInfoToDOM(info);
|
|
}
|
|
}
|
|
|
|
if (!listenersArray)
|
|
return;
|
|
|
|
for (var index = 0; index < listenersArray.length; index++)
|
|
listenersArray[index].handleEvent(event);
|
|
}
|
|
};
|
|
|
|
function listenA11yEvents(aStartToListen)
|
|
{
|
|
if (aStartToListen) {
|
|
// Add observer when adding the first applicant only.
|
|
if (!(gA11yEventApplicantsCount++))
|
|
gA11yEventObserver.observerService
|
|
.addObserver(gA11yEventObserver, "accessible-event", false);
|
|
} else {
|
|
// Remove observer when there are no more applicants only.
|
|
// '< 0' case should not happen, but just in case: removeObserver() will throw.
|
|
if (--gA11yEventApplicantsCount <= 0)
|
|
gA11yEventObserver.observerService
|
|
.removeObserver(gA11yEventObserver, "accessible-event");
|
|
}
|
|
}
|
|
|
|
function addA11yEventListener(aEventType, aEventHandler)
|
|
{
|
|
if (!(aEventType in gA11yEventListeners))
|
|
gA11yEventListeners[aEventType] = new Array();
|
|
|
|
gA11yEventListeners[aEventType].push(aEventHandler);
|
|
}
|
|
|
|
function removeA11yEventListener(aEventType, aEventHandler)
|
|
{
|
|
var listenersArray = gA11yEventListeners[aEventType];
|
|
if (!listenersArray)
|
|
return false;
|
|
|
|
var index = listenersArray.indexOf(aEventHandler);
|
|
if (index == -1)
|
|
return false;
|
|
|
|
listenersArray.splice(index, 1);
|
|
|
|
if (!listenersArray.length) {
|
|
gA11yEventListeners[aEventType] = null;
|
|
delete gA11yEventListeners[aEventType];
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Dumps message to DOM.
|
|
*
|
|
* @param aInfo [in] the message to dump
|
|
* @param aDumpNode [in, optional] host DOM node for dumped message, if ommited
|
|
* then global variable gA11yEventDumpID is used
|
|
*/
|
|
function dumpInfoToDOM(aInfo, aDumpNode)
|
|
{
|
|
var dumpID = gA11yEventDumpID ? gA11yEventDumpID : aDumpNode;
|
|
if (!dumpID)
|
|
return;
|
|
|
|
var dumpElm = document.getElementById(dumpID);
|
|
if (!dumpElm) {
|
|
ok(false, "No dump element '" + dumpID + "' within the document!");
|
|
return;
|
|
}
|
|
|
|
var containerTagName = document instanceof nsIDOMHTMLDocument ?
|
|
"div" : "description";
|
|
var container = document.createElement(containerTagName);
|
|
|
|
container.textContent = aInfo;
|
|
dumpElm.appendChild(container);
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Sequence
|
|
|
|
/**
|
|
* Base class of sequence item.
|
|
*/
|
|
function sequenceItem(aProcessor, aEventType, aTarget, aItemID)
|
|
{
|
|
// private
|
|
|
|
this.startProcess = function sequenceItem_startProcess()
|
|
{
|
|
this.queue.invoke();
|
|
}
|
|
|
|
var item = this;
|
|
|
|
this.queue = new eventQueue();
|
|
this.queue.onFinish = function()
|
|
{
|
|
aProcessor.onProcessed();
|
|
return DO_NOT_FINISH_TEST;
|
|
}
|
|
|
|
var invoker = {
|
|
invoke: function invoker_invoke() {
|
|
return aProcessor.process();
|
|
},
|
|
getID: function invoker_getID()
|
|
{
|
|
return aItemID;
|
|
},
|
|
eventSeq: [ new invokerChecker(aEventType, aTarget) ]
|
|
};
|
|
|
|
this.queue.push(invoker);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Event queue invokers
|
|
|
|
/**
|
|
* Invoker base class for prepare an action.
|
|
*/
|
|
function synthAction(aNodeOrID, aChecker, aEventType)
|
|
{
|
|
this.DOMNode = getNode(aNodeOrID);
|
|
if (aChecker)
|
|
aChecker.target = this.DOMNode;
|
|
|
|
if (aEventType)
|
|
this.eventSeq = [ new invokerChecker(aEventType, this.DOMNode) ];
|
|
|
|
this.check = function synthAction_check(aEvent)
|
|
{
|
|
if (aChecker)
|
|
aChecker.check(aEvent);
|
|
}
|
|
|
|
this.getID = function synthAction_getID() { return aNodeOrID + " action"; }
|
|
}
|