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Final polish of WebView accessibility support for no JavaScript case.

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1. Added tests for the new code added by change:I5a796aef

2. WebCore thread now calls the UI thread to set the cursor to
   the current position enabling the user to interact with
   the content that is being selected on the page.

3. Removed the code that changes the selection on movement of the
   cursor ring. We are dropping the "default web view behavior"
   as granularity of reading the document since with this change
   a user can freely access inputs/buttons/links.

Change-Id: I7a3f6677eff0bc95e8127973d07cec78e3465c7b
This commit is contained in:
Svetoslav Ganov
2011-01-14 11:38:17 -08:00
parent c45ec3440b
commit 9504f5753d
4 changed files with 592 additions and 53 deletions
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11
core/java/android/webkit/AccessibilityInjector.java
View File

@@ -113,6 +113,11 @@ class AccessibilityInjector {
* @return True if the event was processed.
*/
public boolean onKeyEvent(KeyEvent event) {
// We do not handle ENTER in any circumstances.
if (isEnterActionKey(event.getKeyCode())) {
return false;
}
if (event.getAction() == KeyEvent.ACTION_UP) {
return mLastDownEventHandled;
}
@@ -367,6 +372,12 @@ class AccessibilityInjector {
}
}
private boolean isEnterActionKey(int keyCode) {
return keyCode == KeyEvent.KEYCODE_DPAD_CENTER
|| keyCode == KeyEvent.KEYCODE_ENTER
|| keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER;
}
/**
* Represents a web content key-binding.
*/

35
core/java/android/webkit/WebView.java
View File

@@ -16,9 +16,6 @@
package android.webkit;
import android.view.HardwareCanvas;
import com.android.internal.R;
import android.annotation.Widget;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
@@ -31,7 +28,6 @@ import android.content.IntentFilter;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.database.DataSetObserver;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
@@ -57,7 +53,6 @@ import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.SystemClock;
import android.provider.Settings;
import android.speech.tts.TextToSpeech;
import android.text.Selection;
@@ -66,6 +61,7 @@ import android.util.AttributeSet;
import android.util.EventLog;
import android.util.Log;
import android.view.Gravity;
import android.view.HardwareCanvas;
import android.view.KeyCharacterMap;
import android.view.KeyEvent;
import android.view.LayoutInflater;
@@ -92,7 +88,6 @@ import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.CheckedTextView;
import android.widget.EdgeGlow;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.OverScroller;
@@ -677,6 +672,8 @@ public class WebView extends AbsoluteLayout
static final int SET_AUTOFILLABLE = 133;
static final int AUTOFILL_COMPLETE = 134;
static final int SELECT_AT = 135;
private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID;
private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS;
@@ -728,7 +725,8 @@ public class WebView extends AbsoluteLayout
"SET_TOUCH_HIGHLIGHT_RECTS", // = 131;
"SAVE_WEBARCHIVE_FINISHED", // = 132;
"SET_AUTOFILLABLE", // = 133;
"AUTOFILL_COMPLETE" // = 134;
"AUTOFILL_COMPLETE", // = 134;
"SELECT_AT" // = 135;
};
// If the site doesn't use the viewport meta tag to specify the viewport,
@@ -7600,6 +7598,10 @@ public class WebView extends AbsoluteLayout
}
break;
case SELECT_AT:
nativeSelectAt(msg.arg1, msg.arg2);
break;
default:
super.handleMessage(msg);
break;
@@ -7957,24 +7959,6 @@ public class WebView extends AbsoluteLayout
cursorData());
}
/*
* Called from JNI when the cursor has moved. This method
* sends a message to the WebCore requesting the given
* nodePtr in the given framePrt to be selected which will
* result in firing an accessibility event announing its
* content.
*
* Note: Accessibility support.
*/
@SuppressWarnings("unused")
// called from JNI
private void sendMoveSelection(int framePtr, int nodePtr) {
if (AccessibilityManager.getInstance(mContext).isEnabled()
&& mAccessibilityInjector != null) {
mWebViewCore.sendMessage(EventHub.MOVE_SELECTION, framePtr, nodePtr);
}
}
/**
* Called by JNI to send a message to the webcore thread that the user
* touched the webpage.
@@ -8283,6 +8267,7 @@ public class WebView extends AbsoluteLayout
private native Point nativeSelectableText();
private native void nativeSelectAll();
private native void nativeSelectBestAt(Rect rect);
private native void nativeSelectAt(int x, int y);
private native int nativeSelectionX();
private native int nativeSelectionY();
private native int nativeFindIndex();

29
core/java/android/webkit/WebViewCore.java
View File

@@ -641,18 +641,6 @@ final class WebViewCore {
*/
private native String nativeModifySelection(int direction, int granularity);
/**
* Moves the selection to given node i.e. selects that node.
*
* Note: Accessibility support.
*
* @param framePtr Pointer to the frame containing the node to be selected.
* @param nodePtr Pointer to the node to be selected.
*
* @return The selection string.
*/
private native String nativeMoveSelection(int framePtr, int nodePtr);
// EventHub for processing messages
private final EventHub mEventHub;
// WebCore thread handler
@@ -1018,9 +1006,6 @@ final class WebViewCore {
static final int PROXY_CHANGED = 193;
// accessibility support
static final int MOVE_SELECTION = 194;
// private message ids
private static final int DESTROY = 200;
@@ -1439,12 +1424,6 @@ final class WebViewCore {
modifiedSelectionString).sendToTarget();
break;
case MOVE_SELECTION:
String movedSelectionString = nativeMoveSelection(msg.arg1, msg.arg2);
mWebView.mPrivateHandler.obtainMessage(WebView.SELECTION_STRING_CHANGED,
movedSelectionString).sendToTarget();
break;
case LISTBOX_CHOICES:
SparseBooleanArray choices = (SparseBooleanArray)
msg.obj;
@@ -2714,6 +2693,14 @@ final class WebViewCore {
hMode, vMode).sendToTarget();
}
// called by JNI
@SuppressWarnings("unused")
private void selectAt(int x, int y) {
if (mWebView != null) {
mWebView.mPrivateHandler.obtainMessage(WebView.SELECT_AT, x, y).sendToTarget();
}
}
private void useMockDeviceOrientation() {
mDeviceMotionAndOrientationManager.useMock();
}