@Override
protected void onPopulateEventForVirtualView(int virtualViewId, AccessibilityEvent event) {
if (mVirtualViews == null || mVirtualViews.size() <= virtualViewId) {
// TODO(clholgat): Remove this work around when the Android bug is fixed.
// crbug.com/420177
event.setContentDescription(PLACE_HOLDER_STRING);
return;
}
VirtualView view = mVirtualViews.get(virtualViewId);
event.setContentDescription(view.getAccessibilityDescription());
event.setClassName(CompositorViewHolder.class.getName());
}
private static void populateEventFromJSON(AccessibilityEvent event, JSONObject message) {
final JSONArray textArray = message.optJSONArray("text");
if (textArray != null) {
for (int i = 0; i < textArray.length(); i++) event.getText().add(textArray.optString(i));
}
event.setContentDescription(message.optString("description"));
event.setEnabled(message.optBoolean("enabled", true));
event.setChecked(message.optBoolean("checked"));
event.setPassword(message.optBoolean("password"));
event.setAddedCount(message.optInt("addedCount", -1));
event.setRemovedCount(message.optInt("removedCount", -1));
event.setFromIndex(message.optInt("fromIndex", -1));
event.setItemCount(message.optInt("itemCount", -1));
event.setCurrentItemIndex(message.optInt("currentItemIndex", -1));
event.setBeforeText(message.optString("beforeText"));
if (Versions.feature14Plus) {
event.setToIndex(message.optInt("toIndex", -1));
event.setScrollable(message.optBoolean("scrollable"));
event.setScrollX(message.optInt("scrollX", -1));
event.setScrollY(message.optInt("scrollY", -1));
}
if (Versions.feature15Plus) {
event.setMaxScrollX(message.optInt("maxScrollX", -1));
event.setMaxScrollY(message.optInt("maxScrollY", -1));
}
}
@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
super.onInitializeAccessibilityEvent(event);
if (!TextUtils.isEmpty(mAccessibilityClass)) {
event.setClassName(mAccessibilityClass);
if (Switch.class.getName().equals(mAccessibilityClass)) {
String label =
getResources()
.getString(!mTileState ? R.string.switch_bar_on : R.string.switch_bar_off);
event.setContentDescription(label);
event.setChecked(!mTileState);
}
}
}
@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
if (Build.VERSION.SDK_INT >= 14) {
if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
// Action mode started
event.setSource(this);
event.setClassName(getClass().getName());
event.setPackageName(getContext().getPackageName());
event.setContentDescription(mTitle);
} else {
super.onInitializeAccessibilityEvent(event);
}
}
}
@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
super.onInitializeAccessibilityEvent(event);
int childCount = getChildCount();
if (childCount > 0) {
TaskView backMostTask = (TaskView) getChildAt(0);
TaskView frontMostTask = (TaskView) getChildAt(childCount - 1);
event.setFromIndex(mStack.indexOfTask(backMostTask.getTask()));
event.setToIndex(mStack.indexOfTask(frontMostTask.getTask()));
event.setContentDescription(frontMostTask.getTask().activityLabel);
}
event.setItemCount(mStack.getTaskCount());
event.setScrollY(mStackScroller.mScroller.getCurrY());
event.setMaxScrollY(mStackScroller.progressToScrollRange(mLayoutAlgorithm.mMaxScrollP));
}
@Override
protected void onPopulateEventForVirtualView(int virtualViewId, AccessibilityEvent event) {
event.setContentDescription(getItemDescription(virtualViewId));
}