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Bug 1182214 - Update highlight rect as you scroll. r=yzen

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This commit is contained in:
Eitan Isaacson 2015-09-14 10:52:43 -07:00
parent 2df3ec8610
commit 35a6124902
1 changed files with 39 additions and 25 deletions
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64
accessible/jsat/Presentation.jsm
View File

@ -108,8 +108,9 @@ Presenter.prototype = {
* The viewport has changed, either a scroll, pan, zoom, or
* landscape/portrait toggle.
* @param {Window} aWindow window of viewport that changed.
* @param {PivotContext} aCurrentContext context of last pivot change.
*/
viewportChanged: function viewportChanged(aWindow) {}, // jshint ignore:line
viewportChanged: function viewportChanged(aWindow, aCurrentContext) {}, // jshint ignore:line
/**
* We have entered or left text editing mode.
@ -142,9 +143,7 @@ Presenter.prototype = {
/**
* Visual presenter. Draws a box around the virtual cursor's position.
*/
function VisualPresenter() {
this._displayedAccessibles = new WeakMap();
}
function VisualPresenter() {}
VisualPresenter.prototype = Object.create(Presenter.prototype);
@ -156,15 +155,14 @@ VisualPresenter.prototype.type = 'Visual';
VisualPresenter.prototype.BORDER_PADDING = 2;
VisualPresenter.prototype.viewportChanged =
function VisualPresenter_viewportChanged(aWindow) {
let currentDisplay = this._displayedAccessibles.get(aWindow);
if (!currentDisplay) {
function VisualPresenter_viewportChanged(aWindow, aCurrentContext) {
if (!aCurrentContext) {
return null;
}
let currentAcc = currentDisplay.accessible;
let start = currentDisplay.startOffset;
let end = currentDisplay.endOffset;
let currentAcc = aCurrentContext.accessibleForBounds;
let start = aCurrentContext.startOffset;
let end = aCurrentContext.endOffset;
if (Utils.isAliveAndVisible(currentAcc)) {
let bounds = (start === -1 && end === -1) ? Utils.getBounds(currentAcc) :
Utils.getTextBounds(currentAcc, start, end);
@ -189,11 +187,6 @@ VisualPresenter.prototype.pivotChanged =
return null;
}
this._displayedAccessibles.set(aContext.accessible.document.window,
{ accessible: aContext.accessibleForBounds,
startOffset: aContext.startOffset,
endOffset: aContext.endOffset });
try {
aContext.accessibleForBounds.scrollTo(
Ci.nsIAccessibleScrollType.SCROLL_TYPE_ANYWHERE);
@ -413,21 +406,33 @@ AndroidPresenter.prototype.textSelectionChanged =
};
AndroidPresenter.prototype.viewportChanged =
function AndroidPresenter_viewportChanged(aWindow) {
function AndroidPresenter_viewportChanged(aWindow, aCurrentContext) {
if (Utils.AndroidSdkVersion < 14) {
return null;
}
let events = [{
eventType: this.ANDROID_VIEW_SCROLLED,
text: [],
scrollX: aWindow.scrollX,
scrollY: aWindow.scrollY,
maxScrollX: aWindow.scrollMaxX,
maxScrollY: aWindow.scrollMaxY
}];
if (Utils.AndroidSdkVersion >= 16 && aCurrentContext) {
let currentAcc = aCurrentContext.accessibleForBounds;
if (Utils.isAliveAndVisible(currentAcc)) {
events.push({
eventType: this.ANDROID_VIEW_ACCESSIBILITY_FOCUSED,
bounds: Utils.getBounds(currentAcc)
});
}
}
return {
type: this.type,
details: [{
eventType: this.ANDROID_VIEW_SCROLLED,
text: [],
scrollX: aWindow.scrollX,
scrollY: aWindow.scrollY,
maxScrollX: aWindow.scrollMaxX,
maxScrollY: aWindow.scrollMaxY
}]
details: events
};
};
@ -683,10 +688,17 @@ this.Presentation = { // jshint ignore:line
return this.presenters;
},
get displayedAccessibles() {
delete this.displayedAccessibles;
this.displayedAccessibles = new WeakMap();
},
pivotChanged: function Presentation_pivotChanged(
aPosition, aOldPosition, aReason, aStartOffset, aEndOffset, aIsUserInput) {
let context = new PivotContext(
aPosition, aOldPosition, aStartOffset, aEndOffset);
this.displayedAccessibles.set(context.accessible.document.window, context);
return [p.pivotChanged(context, aReason, aIsUserInput)
for each (p in this.presenters)]; // jshint ignore:line
},
@ -724,7 +736,9 @@ this.Presentation = { // jshint ignore:line
},
viewportChanged: function Presentation_viewportChanged(aWindow) {
return [p.viewportChanged(aWindow) for each (p in this.presenters)]; // jshint ignore:line
let context = this.displayedAccessibles.get(aWindow);
return [p.viewportChanged(aWindow, context) // jshint ignore:line
for each (p in this.presenters)]; // jshint ignore:line
},
editingModeChanged: function Presentation_editingModeChanged(aIsEditing) {