Adding a way for Hierarchy Viewer to get the focused window. (f9624764) · Commits · e / os / android_frameworks_base

services/java/com/android/server/ViewServer.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -60,6 +60,8 @@ class ViewServer implements Runnable {
		private static final String COMMAND_WINDOW_MANAGER_LIST = "LIST";
		// Keeps a connection open and notifies when the list of windows changes
		private static final String COMMAND_WINDOW_MANAGER_AUTOLIST = "AUTOLIST";
		// Returns the focused window
		private static final String COMMAND_WINDOW_MANAGER_GET_FOCUS = "GET_FOCUS";

		private ServerSocket mServer;
		private Thread mThread;
		@@ -250,6 +252,8 @@ class ViewServer implements Runnable {
		result = writeValue(mClient, VALUE_SERVER_VERSION);
		} else if (COMMAND_WINDOW_MANAGER_LIST.equalsIgnoreCase(command)) {
		result = mWindowManager.viewServerListWindows(mClient);
		} else if (COMMAND_WINDOW_MANAGER_GET_FOCUS.equalsIgnoreCase(command)) {
		result = mWindowManager.viewServerGetFocusedWindow(mClient);
		} else if(COMMAND_WINDOW_MANAGER_AUTOLIST.equalsIgnoreCase(command)) {
		result = windowManagerAutolistLoop();
		} else {

+45 −0

Original line number	Diff line number	Diff line
		@@ -4729,6 +4729,51 @@ public class WindowManagerService extends IWindowManager.Stub
		return result;
		}

		/**
		* Returns the focused window in the following format:
		* windowHashCodeInHexadecimal windowName
		*
		* @param client The remote client to send the listing to.
		* @return False if an error occurred, true otherwise.
		*/
		boolean viewServerGetFocusedWindow(Socket client) {
		if (isSystemSecure()) {
		return false;
		}

		boolean result = true;

		WindowState focusedWindow = getFocusedWindow();

		BufferedWriter out = null;

		// Any uncaught exception will crash the system process
		try {
		OutputStream clientStream = client.getOutputStream();
		out = new BufferedWriter(new OutputStreamWriter(clientStream), 8 * 1024);

		if(focusedWindow != null) {
		out.write(Integer.toHexString(System.identityHashCode(focusedWindow)));
		out.write(' ');
		out.append(focusedWindow.mAttrs.getTitle());
		}
		out.write('\n');
		out.flush();
		} catch (Exception e) {
		result = false;
		} finally {
		if (out != null) {
		try {
		out.close();
		} catch (IOException e) {
		result = false;
		}
		}
		}

		return result;
		}

		/**
		* Sends a command to a target window. The result of the command, if any, will be
		* written in the output stream of the specified socket.