1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/accessible/src/jsat/Presentation.jsm Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,665 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +'use strict';
1.9 +
1.10 +const Cc = Components.classes;
1.11 +const Ci = Components.interfaces;
1.12 +const Cu = Components.utils;
1.13 +const Cr = Components.results;
1.14 +
1.15 +Cu.import('resource://gre/modules/XPCOMUtils.jsm');
1.16 +XPCOMUtils.defineLazyModuleGetter(this, 'Utils',
1.17 + 'resource://gre/modules/accessibility/Utils.jsm');
1.18 +XPCOMUtils.defineLazyModuleGetter(this, 'Logger',
1.19 + 'resource://gre/modules/accessibility/Utils.jsm');
1.20 +XPCOMUtils.defineLazyModuleGetter(this, 'PivotContext',
1.21 + 'resource://gre/modules/accessibility/Utils.jsm');
1.22 +XPCOMUtils.defineLazyModuleGetter(this, 'UtteranceGenerator',
1.23 + 'resource://gre/modules/accessibility/OutputGenerator.jsm');
1.24 +XPCOMUtils.defineLazyModuleGetter(this, 'BrailleGenerator',
1.25 + 'resource://gre/modules/accessibility/OutputGenerator.jsm');
1.26 +XPCOMUtils.defineLazyModuleGetter(this, 'Roles',
1.27 + 'resource://gre/modules/accessibility/Constants.jsm');
1.28 +XPCOMUtils.defineLazyModuleGetter(this, 'States',
1.29 + 'resource://gre/modules/accessibility/Constants.jsm');
1.30 +
1.31 +this.EXPORTED_SYMBOLS = ['Presentation'];
1.32 +
1.33 +/**
1.34 + * The interface for all presenter classes. A presenter could be, for example,
1.35 + * a speech output module, or a visual cursor indicator.
1.36 + */
1.37 +function Presenter() {}
1.38 +
1.39 +Presenter.prototype = {
1.40 + /**
1.41 + * The type of presenter. Used for matching it with the appropriate output method.
1.42 + */
1.43 + type: 'Base',
1.44 +
1.45 + /**
1.46 + * The virtual cursor's position changed.
1.47 + * @param {PivotContext} aContext the context object for the new pivot
1.48 + * position.
1.49 + * @param {int} aReason the reason for the pivot change.
1.50 + * See nsIAccessiblePivot.
1.51 + */
1.52 + pivotChanged: function pivotChanged(aContext, aReason) {},
1.53 +
1.54 + /**
1.55 + * An object's action has been invoked.
1.56 + * @param {nsIAccessible} aObject the object that has been invoked.
1.57 + * @param {string} aActionName the name of the action.
1.58 + */
1.59 + actionInvoked: function actionInvoked(aObject, aActionName) {},
1.60 +
1.61 + /**
1.62 + * Text has changed, either by the user or by the system. TODO.
1.63 + */
1.64 + textChanged: function textChanged(aIsInserted, aStartOffset,
1.65 + aLength, aText,
1.66 + aModifiedText) {},
1.67 +
1.68 + /**
1.69 + * Text selection has changed. TODO.
1.70 + */
1.71 + textSelectionChanged: function textSelectionChanged(aText, aStart, aEnd, aOldStart, aOldEnd, aIsFromUser) {},
1.72 +
1.73 + /**
1.74 + * Selection has changed. TODO.
1.75 + * @param {nsIAccessible} aObject the object that has been selected.
1.76 + */
1.77 + selectionChanged: function selectionChanged(aObject) {},
1.78 +
1.79 + /**
1.80 + * Value has changed.
1.81 + * @param {nsIAccessible} aAccessible the object whose value has changed.
1.82 + */
1.83 + valueChanged: function valueChanged(aAccessible) {},
1.84 +
1.85 + /**
1.86 + * The tab, or the tab's document state has changed.
1.87 + * @param {nsIAccessible} aDocObj the tab document accessible that has had its
1.88 + * state changed, or null if the tab has no associated document yet.
1.89 + * @param {string} aPageState the state name for the tab, valid states are:
1.90 + * 'newtab', 'loading', 'newdoc', 'loaded', 'stopped', and 'reload'.
1.91 + */
1.92 + tabStateChanged: function tabStateChanged(aDocObj, aPageState) {},
1.93 +
1.94 + /**
1.95 + * The current tab has changed.
1.96 + * @param {PivotContext} aDocContext context object for tab's
1.97 + * document.
1.98 + * @param {PivotContext} aVCContext context object for tab's current
1.99 + * virtual cursor position.
1.100 + */
1.101 + tabSelected: function tabSelected(aDocContext, aVCContext) {},
1.102 +
1.103 + /**
1.104 + * The viewport has changed, either a scroll, pan, zoom, or
1.105 + * landscape/portrait toggle.
1.106 + * @param {Window} aWindow window of viewport that changed.
1.107 + */
1.108 + viewportChanged: function viewportChanged(aWindow) {},
1.109 +
1.110 + /**
1.111 + * We have entered or left text editing mode.
1.112 + */
1.113 + editingModeChanged: function editingModeChanged(aIsEditing) {},
1.114 +
1.115 + /**
1.116 + * Announce something. Typically an app state change.
1.117 + */
1.118 + announce: function announce(aAnnouncement) {},
1.119 +
1.120 +
1.121 +
1.122 + /**
1.123 + * Announce a live region.
1.124 + * @param {PivotContext} aContext context object for an accessible.
1.125 + * @param {boolean} aIsPolite A politeness level for a live region.
1.126 + * @param {boolean} aIsHide An indicator of hide/remove event.
1.127 + * @param {string} aModifiedText Optional modified text.
1.128 + */
1.129 + liveRegion: function liveRegionShown(aContext, aIsPolite, aIsHide,
1.130 + aModifiedText) {}
1.131 +};
1.132 +
1.133 +/**
1.134 + * Visual presenter. Draws a box around the virtual cursor's position.
1.135 + */
1.136 +
1.137 +this.VisualPresenter = function VisualPresenter() {
1.138 + this._displayedAccessibles = new WeakMap();
1.139 +};
1.140 +
1.141 +VisualPresenter.prototype = {
1.142 + __proto__: Presenter.prototype,
1.143 +
1.144 + type: 'Visual',
1.145 +
1.146 + /**
1.147 + * The padding in pixels between the object and the highlight border.
1.148 + */
1.149 + BORDER_PADDING: 2,
1.150 +
1.151 + viewportChanged: function VisualPresenter_viewportChanged(aWindow) {
1.152 + let currentDisplay = this._displayedAccessibles.get(aWindow);
1.153 + if (!currentDisplay) {
1.154 + return null;
1.155 + }
1.156 +
1.157 + let currentAcc = currentDisplay.accessible;
1.158 + let start = currentDisplay.startOffset;
1.159 + let end = currentDisplay.endOffset;
1.160 + if (Utils.isAliveAndVisible(currentAcc)) {
1.161 + let bounds = (start === -1 && end === -1) ? Utils.getBounds(currentAcc) :
1.162 + Utils.getTextBounds(currentAcc, start, end);
1.163 +
1.164 + return {
1.165 + type: this.type,
1.166 + details: {
1.167 + method: 'showBounds',
1.168 + bounds: bounds,
1.169 + padding: this.BORDER_PADDING
1.170 + }
1.171 + };
1.172 + }
1.173 +
1.174 + return null;
1.175 + },
1.176 +
1.177 + pivotChanged: function VisualPresenter_pivotChanged(aContext, aReason) {
1.178 + if (!aContext.accessible) {
1.179 + // XXX: Don't hide because another vc may be using the highlight.
1.180 + return null;
1.181 + }
1.182 +
1.183 + this._displayedAccessibles.set(aContext.accessible.document.window,
1.184 + { accessible: aContext.accessibleForBounds,
1.185 + startOffset: aContext.startOffset,
1.186 + endOffset: aContext.endOffset });
1.187 +
1.188 + try {
1.189 + aContext.accessibleForBounds.scrollTo(
1.190 + Ci.nsIAccessibleScrollType.SCROLL_TYPE_ANYWHERE);
1.191 +
1.192 + let bounds = (aContext.startOffset === -1 && aContext.endOffset === -1) ?
1.193 + aContext.bounds : Utils.getTextBounds(aContext.accessibleForBounds,
1.194 + aContext.startOffset,
1.195 + aContext.endOffset);
1.196 +
1.197 + return {
1.198 + type: this.type,
1.199 + details: {
1.200 + method: 'showBounds',
1.201 + bounds: bounds,
1.202 + padding: this.BORDER_PADDING
1.203 + }
1.204 + };
1.205 + } catch (e) {
1.206 + Logger.logException(e, 'Failed to get bounds');
1.207 + return null;
1.208 + }
1.209 + },
1.210 +
1.211 + tabSelected: function VisualPresenter_tabSelected(aDocContext, aVCContext) {
1.212 + return this.pivotChanged(aVCContext, Ci.nsIAccessiblePivot.REASON_NONE);
1.213 + },
1.214 +
1.215 + tabStateChanged: function VisualPresenter_tabStateChanged(aDocObj,
1.216 + aPageState) {
1.217 + if (aPageState == 'newdoc')
1.218 + return {type: this.type, details: {method: 'hideBounds'}};
1.219 +
1.220 + return null;
1.221 + },
1.222 +
1.223 + announce: function VisualPresenter_announce(aAnnouncement) {
1.224 + return {
1.225 + type: this.type,
1.226 + details: {
1.227 + method: 'showAnnouncement',
1.228 + text: aAnnouncement,
1.229 + duration: 1000
1.230 + }
1.231 + };
1.232 + }
1.233 +};
1.234 +
1.235 +/**
1.236 + * Android presenter. Fires Android a11y events.
1.237 + */
1.238 +
1.239 +this.AndroidPresenter = function AndroidPresenter() {};
1.240 +
1.241 +AndroidPresenter.prototype = {
1.242 + __proto__: Presenter.prototype,
1.243 +
1.244 + type: 'Android',
1.245 +
1.246 + // Android AccessibilityEvent type constants.
1.247 + ANDROID_VIEW_CLICKED: 0x01,
1.248 + ANDROID_VIEW_LONG_CLICKED: 0x02,
1.249 + ANDROID_VIEW_SELECTED: 0x04,
1.250 + ANDROID_VIEW_FOCUSED: 0x08,
1.251 + ANDROID_VIEW_TEXT_CHANGED: 0x10,
1.252 + ANDROID_WINDOW_STATE_CHANGED: 0x20,
1.253 + ANDROID_VIEW_HOVER_ENTER: 0x80,
1.254 + ANDROID_VIEW_HOVER_EXIT: 0x100,
1.255 + ANDROID_VIEW_SCROLLED: 0x1000,
1.256 + ANDROID_VIEW_TEXT_SELECTION_CHANGED: 0x2000,
1.257 + ANDROID_ANNOUNCEMENT: 0x4000,
1.258 + ANDROID_VIEW_ACCESSIBILITY_FOCUSED: 0x8000,
1.259 + ANDROID_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY: 0x20000,
1.260 +
1.261 + pivotChanged: function AndroidPresenter_pivotChanged(aContext, aReason) {
1.262 + if (!aContext.accessible)
1.263 + return null;
1.264 +
1.265 + let androidEvents = [];
1.266 +
1.267 + let isExploreByTouch = (aReason == Ci.nsIAccessiblePivot.REASON_POINT &&
1.268 + Utils.AndroidSdkVersion >= 14);
1.269 + let focusEventType = (Utils.AndroidSdkVersion >= 16) ?
1.270 + this.ANDROID_VIEW_ACCESSIBILITY_FOCUSED :
1.271 + this.ANDROID_VIEW_FOCUSED;
1.272 +
1.273 + if (isExploreByTouch) {
1.274 + // This isn't really used by TalkBack so this is a half-hearted attempt
1.275 + // for now.
1.276 + androidEvents.push({eventType: this.ANDROID_VIEW_HOVER_EXIT, text: []});
1.277 + }
1.278 +
1.279 + let brailleOutput = {};
1.280 + if (Utils.AndroidSdkVersion >= 16) {
1.281 + if (!this._braillePresenter) {
1.282 + this._braillePresenter = new BraillePresenter();
1.283 + }
1.284 + brailleOutput = this._braillePresenter.pivotChanged(aContext, aReason).
1.285 + details;
1.286 + }
1.287 +
1.288 + if (aReason === Ci.nsIAccessiblePivot.REASON_TEXT) {
1.289 + if (Utils.AndroidSdkVersion >= 16) {
1.290 + let adjustedText = aContext.textAndAdjustedOffsets;
1.291 +
1.292 + androidEvents.push({
1.293 + eventType: this.ANDROID_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY,
1.294 + text: [adjustedText.text],
1.295 + fromIndex: adjustedText.startOffset,
1.296 + toIndex: adjustedText.endOffset
1.297 + });
1.298 + }
1.299 + } else {
1.300 + let state = Utils.getState(aContext.accessible);
1.301 + androidEvents.push({eventType: (isExploreByTouch) ?
1.302 + this.ANDROID_VIEW_HOVER_ENTER : focusEventType,
1.303 + text: UtteranceGenerator.genForContext(aContext).output,
1.304 + bounds: aContext.bounds,
1.305 + clickable: aContext.accessible.actionCount > 0,
1.306 + checkable: state.contains(States.CHECKABLE),
1.307 + checked: state.contains(States.CHECKED),
1.308 + brailleOutput: brailleOutput});
1.309 + }
1.310 +
1.311 +
1.312 + return {
1.313 + type: this.type,
1.314 + details: androidEvents
1.315 + };
1.316 + },
1.317 +
1.318 + actionInvoked: function AndroidPresenter_actionInvoked(aObject, aActionName) {
1.319 + let state = Utils.getState(aObject);
1.320 +
1.321 + // Checkable objects will have a state changed event we will use instead.
1.322 + if (state.contains(States.CHECKABLE))
1.323 + return null;
1.324 +
1.325 + return {
1.326 + type: this.type,
1.327 + details: [{
1.328 + eventType: this.ANDROID_VIEW_CLICKED,
1.329 + text: UtteranceGenerator.genForAction(aObject, aActionName),
1.330 + checked: state.contains(States.CHECKED)
1.331 + }]
1.332 + };
1.333 + },
1.334 +
1.335 + tabSelected: function AndroidPresenter_tabSelected(aDocContext, aVCContext) {
1.336 + // Send a pivot change message with the full context utterance for this doc.
1.337 + return this.pivotChanged(aVCContext, Ci.nsIAccessiblePivot.REASON_NONE);
1.338 + },
1.339 +
1.340 + tabStateChanged: function AndroidPresenter_tabStateChanged(aDocObj,
1.341 + aPageState) {
1.342 + return this.announce(
1.343 + UtteranceGenerator.genForTabStateChange(aDocObj, aPageState).join(' '));
1.344 + },
1.345 +
1.346 + textChanged: function AndroidPresenter_textChanged(aIsInserted, aStart,
1.347 + aLength, aText,
1.348 + aModifiedText) {
1.349 + let eventDetails = {
1.350 + eventType: this.ANDROID_VIEW_TEXT_CHANGED,
1.351 + text: [aText],
1.352 + fromIndex: aStart,
1.353 + removedCount: 0,
1.354 + addedCount: 0
1.355 + };
1.356 +
1.357 + if (aIsInserted) {
1.358 + eventDetails.addedCount = aLength;
1.359 + eventDetails.beforeText =
1.360 + aText.substring(0, aStart) + aText.substring(aStart + aLength);
1.361 + } else {
1.362 + eventDetails.removedCount = aLength;
1.363 + eventDetails.beforeText =
1.364 + aText.substring(0, aStart) + aModifiedText + aText.substring(aStart);
1.365 + }
1.366 +
1.367 + return {type: this.type, details: [eventDetails]};
1.368 + },
1.369 +
1.370 + textSelectionChanged: function AndroidPresenter_textSelectionChanged(aText, aStart,
1.371 + aEnd, aOldStart,
1.372 + aOldEnd, aIsFromUser) {
1.373 + let androidEvents = [];
1.374 +
1.375 + if (Utils.AndroidSdkVersion >= 14 && !aIsFromUser) {
1.376 + if (!this._braillePresenter) {
1.377 + this._braillePresenter = new BraillePresenter();
1.378 + }
1.379 + let brailleOutput = this._braillePresenter.textSelectionChanged(aText, aStart, aEnd,
1.380 + aOldStart, aOldEnd,
1.381 + aIsFromUser).details;
1.382 +
1.383 + androidEvents.push({
1.384 + eventType: this.ANDROID_VIEW_TEXT_SELECTION_CHANGED,
1.385 + text: [aText],
1.386 + fromIndex: aStart,
1.387 + toIndex: aEnd,
1.388 + itemCount: aText.length,
1.389 + brailleOutput: brailleOutput
1.390 + });
1.391 + }
1.392 +
1.393 + if (Utils.AndroidSdkVersion >= 16 && aIsFromUser) {
1.394 + let [from, to] = aOldStart < aStart ? [aOldStart, aStart] : [aStart, aOldStart];
1.395 + androidEvents.push({
1.396 + eventType: this.ANDROID_VIEW_TEXT_TRAVERSED_AT_MOVEMENT_GRANULARITY,
1.397 + text: [aText],
1.398 + fromIndex: from,
1.399 + toIndex: to
1.400 + });
1.401 + }
1.402 +
1.403 + return {
1.404 + type: this.type,
1.405 + details: androidEvents
1.406 + };
1.407 + },
1.408 +
1.409 + viewportChanged: function AndroidPresenter_viewportChanged(aWindow) {
1.410 + if (Utils.AndroidSdkVersion < 14)
1.411 + return null;
1.412 +
1.413 + return {
1.414 + type: this.type,
1.415 + details: [{
1.416 + eventType: this.ANDROID_VIEW_SCROLLED,
1.417 + text: [],
1.418 + scrollX: aWindow.scrollX,
1.419 + scrollY: aWindow.scrollY,
1.420 + maxScrollX: aWindow.scrollMaxX,
1.421 + maxScrollY: aWindow.scrollMaxY
1.422 + }]
1.423 + };
1.424 + },
1.425 +
1.426 + editingModeChanged: function AndroidPresenter_editingModeChanged(aIsEditing) {
1.427 + return this.announce(
1.428 + UtteranceGenerator.genForEditingMode(aIsEditing).join(' '));
1.429 + },
1.430 +
1.431 + announce: function AndroidPresenter_announce(aAnnouncement) {
1.432 + return {
1.433 + type: this.type,
1.434 + details: [{
1.435 + eventType: (Utils.AndroidSdkVersion >= 16) ?
1.436 + this.ANDROID_ANNOUNCEMENT : this.ANDROID_VIEW_TEXT_CHANGED,
1.437 + text: [aAnnouncement],
1.438 + addedCount: aAnnouncement.length,
1.439 + removedCount: 0,
1.440 + fromIndex: 0
1.441 + }]
1.442 + };
1.443 + },
1.444 +
1.445 + liveRegion: function AndroidPresenter_liveRegion(aContext, aIsPolite,
1.446 + aIsHide, aModifiedText) {
1.447 + return this.announce(
1.448 + UtteranceGenerator.genForLiveRegion(aContext, aIsHide,
1.449 + aModifiedText).join(' '));
1.450 + }
1.451 +};
1.452 +
1.453 +/**
1.454 + * A speech presenter for direct TTS output
1.455 + */
1.456 +
1.457 +this.SpeechPresenter = function SpeechPresenter() {};
1.458 +
1.459 +SpeechPresenter.prototype = {
1.460 + __proto__: Presenter.prototype,
1.461 +
1.462 + type: 'Speech',
1.463 +
1.464 + pivotChanged: function SpeechPresenter_pivotChanged(aContext, aReason) {
1.465 + if (!aContext.accessible)
1.466 + return null;
1.467 +
1.468 + return {
1.469 + type: this.type,
1.470 + details: {
1.471 + actions: [
1.472 + {method: 'playEarcon',
1.473 + data: aContext.accessible.role === Roles.KEY ?
1.474 + 'virtual_cursor_key' : 'virtual_cursor_move',
1.475 + options: {}},
1.476 + {method: 'speak',
1.477 + data: UtteranceGenerator.genForContext(aContext).output.join(' '),
1.478 + options: {enqueue: true}}
1.479 + ]
1.480 + }
1.481 + };
1.482 + },
1.483 +
1.484 + valueChanged: function SpeechPresenter_valueChanged(aAccessible) {
1.485 + return {
1.486 + type: this.type,
1.487 + details: {
1.488 + actions: [
1.489 + { method: 'speak',
1.490 + data: aAccessible.value,
1.491 + options: { enqueue: false } }
1.492 + ]
1.493 + }
1.494 + }
1.495 + },
1.496 +
1.497 + actionInvoked: function SpeechPresenter_actionInvoked(aObject, aActionName) {
1.498 + let actions = [];
1.499 + if (aActionName === 'click') {
1.500 + actions.push({method: 'playEarcon',
1.501 + data: 'clicked',
1.502 + options: {}});
1.503 + } else {
1.504 + actions.push({method: 'speak',
1.505 + data: UtteranceGenerator.genForAction(aObject, aActionName).join(' '),
1.506 + options: {enqueue: false}});
1.507 + }
1.508 + return { type: this.type, details: { actions: actions } };
1.509 + },
1.510 +
1.511 + liveRegion: function SpeechPresenter_liveRegion(aContext, aIsPolite, aIsHide,
1.512 + aModifiedText) {
1.513 + return {
1.514 + type: this.type,
1.515 + details: {
1.516 + actions: [{
1.517 + method: 'speak',
1.518 + data: UtteranceGenerator.genForLiveRegion(aContext, aIsHide,
1.519 + aModifiedText).join(' '),
1.520 + options: {enqueue: aIsPolite}
1.521 + }]
1.522 + }
1.523 + };
1.524 + },
1.525 +
1.526 + announce: function SpeechPresenter_announce(aAnnouncement) {
1.527 + return {
1.528 + type: this.type,
1.529 + details: {
1.530 + actions: [{
1.531 + method: 'speak', data: aAnnouncement, options: { enqueue: false }
1.532 + }]
1.533 + }
1.534 + };
1.535 + }
1.536 +};
1.537 +
1.538 +/**
1.539 + * A haptic presenter
1.540 + */
1.541 +
1.542 +this.HapticPresenter = function HapticPresenter() {};
1.543 +
1.544 +HapticPresenter.prototype = {
1.545 + __proto__: Presenter.prototype,
1.546 +
1.547 + type: 'Haptic',
1.548 +
1.549 + PIVOT_CHANGE_PATTERN: [40],
1.550 +
1.551 + pivotChanged: function HapticPresenter_pivotChanged(aContext, aReason) {
1.552 + return { type: this.type, details: { pattern: this.PIVOT_CHANGE_PATTERN } };
1.553 + }
1.554 +};
1.555 +
1.556 +/**
1.557 + * A braille presenter
1.558 + */
1.559 +
1.560 +this.BraillePresenter = function BraillePresenter() {};
1.561 +
1.562 +BraillePresenter.prototype = {
1.563 + __proto__: Presenter.prototype,
1.564 +
1.565 + type: 'Braille',
1.566 +
1.567 + pivotChanged: function BraillePresenter_pivotChanged(aContext, aReason) {
1.568 + if (!aContext.accessible) {
1.569 + return null;
1.570 + }
1.571 +
1.572 + let brailleOutput = BrailleGenerator.genForContext(aContext);
1.573 + brailleOutput.output = brailleOutput.output.join(' ');
1.574 + brailleOutput.selectionStart = 0;
1.575 + brailleOutput.selectionEnd = 0;
1.576 +
1.577 + return { type: this.type, details: brailleOutput };
1.578 + },
1.579 +
1.580 + textSelectionChanged: function BraillePresenter_textSelectionChanged(aText, aStart,
1.581 + aEnd, aOldStart,
1.582 + aOldEnd, aIsFromUser) {
1.583 + return { type: this.type,
1.584 + details: { selectionStart: aStart,
1.585 + selectionEnd: aEnd } };
1.586 + },
1.587 +
1.588 +
1.589 +};
1.590 +
1.591 +this.Presentation = {
1.592 + get presenters() {
1.593 + delete this.presenters;
1.594 + let presenterMap = {
1.595 + 'mobile/android': [VisualPresenter, AndroidPresenter],
1.596 + 'b2g': [VisualPresenter, SpeechPresenter, HapticPresenter],
1.597 + 'browser': [VisualPresenter, SpeechPresenter, HapticPresenter,
1.598 + AndroidPresenter]
1.599 + };
1.600 + this.presenters = [new P() for (P of presenterMap[Utils.MozBuildApp])];
1.601 + return this.presenters;
1.602 + },
1.603 +
1.604 + pivotChanged: function Presentation_pivotChanged(aPosition, aOldPosition, aReason,
1.605 + aStartOffset, aEndOffset) {
1.606 + let context = new PivotContext(aPosition, aOldPosition, aStartOffset, aEndOffset);
1.607 + return [p.pivotChanged(context, aReason)
1.608 + for each (p in this.presenters)];
1.609 + },
1.610 +
1.611 + actionInvoked: function Presentation_actionInvoked(aObject, aActionName) {
1.612 + return [p.actionInvoked(aObject, aActionName)
1.613 + for each (p in this.presenters)];
1.614 + },
1.615 +
1.616 + textChanged: function Presentation_textChanged(aIsInserted, aStartOffset,
1.617 + aLength, aText,
1.618 + aModifiedText) {
1.619 + return [p.textChanged(aIsInserted, aStartOffset, aLength,
1.620 + aText, aModifiedText)
1.621 + for each (p in this.presenters)];
1.622 + },
1.623 +
1.624 + textSelectionChanged: function textSelectionChanged(aText, aStart, aEnd,
1.625 + aOldStart, aOldEnd,
1.626 + aIsFromUser) {
1.627 + return [p.textSelectionChanged(aText, aStart, aEnd,
1.628 + aOldStart, aOldEnd, aIsFromUser)
1.629 + for each (p in this.presenters)];
1.630 + },
1.631 +
1.632 + valueChanged: function valueChanged(aAccessible) {
1.633 + return [ p.valueChanged(aAccessible) for (p of this.presenters) ];
1.634 + },
1.635 +
1.636 + tabStateChanged: function Presentation_tabStateChanged(aDocObj, aPageState) {
1.637 + return [p.tabStateChanged(aDocObj, aPageState)
1.638 + for each (p in this.presenters)];
1.639 + },
1.640 +
1.641 + viewportChanged: function Presentation_viewportChanged(aWindow) {
1.642 + return [p.viewportChanged(aWindow)
1.643 + for each (p in this.presenters)];
1.644 + },
1.645 +
1.646 + editingModeChanged: function Presentation_editingModeChanged(aIsEditing) {
1.647 + return [p.editingModeChanged(aIsEditing)
1.648 + for each (p in this.presenters)];
1.649 + },
1.650 +
1.651 + announce: function Presentation_announce(aAnnouncement) {
1.652 + // XXX: Typically each presenter uses the UtteranceGenerator,
1.653 + // but there really isn't a point here.
1.654 + return [p.announce(UtteranceGenerator.genForAnnouncement(aAnnouncement)[0])
1.655 + for each (p in this.presenters)];
1.656 + },
1.657 +
1.658 + liveRegion: function Presentation_liveRegion(aAccessible, aIsPolite, aIsHide,
1.659 + aModifiedText) {
1.660 + let context;
1.661 + if (!aModifiedText) {
1.662 + context = new PivotContext(aAccessible, null, -1, -1, true,
1.663 + aIsHide ? true : false);
1.664 + }
1.665 + return [p.liveRegion(context, aIsPolite, aIsHide, aModifiedText) for (
1.666 + p of this.presenters)];
1.667 + }
1.668 +};
