gecko-dev/mobile/android/base/TextSelection.java

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko;
import android.util.Log;
import android.view.View;
import org.json.JSONObject;
class TextSelection implements GeckoEventListener {
private static final String LOGTAG = "GeckoTextSelection";
private final TextSelectionHandle mStartHandle;
private final TextSelectionHandle mEndHandle;
TextSelection(TextSelectionHandle startHandle, TextSelectionHandle endHandle) {
mStartHandle = startHandle;
mEndHandle = endHandle;
// Only register listeners if we have valid start/end handles
if (mStartHandle == null || mEndHandle == null) {
Log.e(LOGTAG, "Failed to initialize text selection because at least one handle is null");
} else {
GeckoAppShell.registerGeckoEventListener("TextSelection:ShowHandles", this);
GeckoAppShell.registerGeckoEventListener("TextSelection:HideHandles", this);
GeckoAppShell.registerGeckoEventListener("TextSelection:PositionHandles", this);
}
}
void destroy() {
GeckoAppShell.unregisterGeckoEventListener("TextSelection:ShowHandles", this);
GeckoAppShell.unregisterGeckoEventListener("TextSelection:HideHandles", this);
GeckoAppShell.unregisterGeckoEventListener("TextSelection:PositionHandles", this);
}
public void handleMessage(String event, JSONObject message) {
try {
if (event.equals("TextSelection:ShowHandles")) {
GeckoApp.mAppContext.mMainHandler.post(new Runnable() {
public void run() {
mStartHandle.setVisibility(View.VISIBLE);
mEndHandle.setVisibility(View.VISIBLE);
}
});
} else if (event.equals("TextSelection:HideHandles")) {
GeckoApp.mAppContext.mMainHandler.post(new Runnable() {
public void run() {
mStartHandle.setVisibility(View.GONE);
mEndHandle.setVisibility(View.GONE);
}
});
} else if (event.equals("TextSelection:PositionHandles")) {
final int startLeft = message.getInt("startLeft");
final int startTop = message.getInt("startTop");
final int endLeft = message.getInt("endLeft");
final int endTop = message.getInt("endTop");
GeckoApp.mAppContext.mMainHandler.post(new Runnable() {
public void run() {
mStartHandle.positionFromGecko(startLeft, startTop);
mEndHandle.positionFromGecko(endLeft, endTop);
}
});
}
} catch (Exception e) {
Log.e(LOGTAG, "Exception handling message \"" + event + "\":", e);
}
}
}