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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 package org.chromium.content_shell;
      6 
      7 import android.content.Context;
      8 import android.util.AttributeSet;
      9 import android.view.LayoutInflater;
     10 import android.widget.FrameLayout;
     11 
     12 import org.chromium.base.CalledByNative;
     13 import org.chromium.base.JNINamespace;
     14 import org.chromium.content.browser.ContentView;
     15 import org.chromium.content.browser.ContentViewRenderView;
     16 import org.chromium.ui.WindowAndroid;
     17 
     18 /**
     19  * Container and generator of ShellViews.
     20  */
     21 @JNINamespace("content")
     22 public class ShellManager extends FrameLayout {
     23 
     24     public static final String DEFAULT_SHELL_URL = "http://www.google.com";
     25     private static boolean sStartup = true;
     26     private WindowAndroid mWindow;
     27     private Shell mActiveShell;
     28 
     29     private String mStartupUrl = DEFAULT_SHELL_URL;
     30 
     31     // The target for all content rendering.
     32     private ContentViewRenderView mContentViewRenderView;
     33 
     34     /**
     35      * Constructor for inflating via XML.
     36      */
     37     public ShellManager(Context context, AttributeSet attrs) {
     38         super(context, attrs);
     39         nativeInit(this);
     40         mContentViewRenderView = new ContentViewRenderView(context) {
     41             @Override
     42             protected void onReadyToRender() {
     43                 if (sStartup) {
     44                     mActiveShell.loadUrl(mStartupUrl);
     45                     sStartup = false;
     46                 }
     47             }
     48         };
     49     }
     50 
     51     /**
     52      * @param window The window used to generate all shells.
     53      */
     54     public void setWindow(WindowAndroid window) {
     55         mWindow = window;
     56     }
     57 
     58     /**
     59      * @return The window used to generate all shells.
     60      */
     61     public WindowAndroid getWindow() {
     62         return mWindow;
     63     }
     64 
     65     /**
     66      * Sets the startup URL for new shell windows.
     67      */
     68     public void setStartupUrl(String url) {
     69         mStartupUrl = url;
     70     }
     71 
     72     /**
     73      * @return The currently visible shell view or null if one is not showing.
     74      */
     75     public Shell getActiveShell() {
     76         return mActiveShell;
     77     }
     78 
     79     /**
     80      * Creates a new shell pointing to the specified URL.
     81      * @param url The URL the shell should load upon creation.
     82      */
     83     public void launchShell(String url) {
     84         nativeLaunchShell(url);
     85     }
     86 
     87     @SuppressWarnings("unused")
     88     @CalledByNative
     89     private Object createShell() {
     90         LayoutInflater inflater =
     91                 (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
     92         Shell shellView = (Shell) inflater.inflate(R.layout.shell_view, null);
     93         shellView.setWindow(mWindow);
     94 
     95         if (mActiveShell != null) closeShell(mActiveShell);
     96 
     97         shellView.setContentViewRenderView(mContentViewRenderView);
     98         addView(shellView, new FrameLayout.LayoutParams(
     99                 FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT));
    100         mActiveShell = shellView;
    101         ContentView contentView = mActiveShell.getContentView();
    102         if (contentView != null) {
    103             mContentViewRenderView.setCurrentContentView(contentView);
    104             contentView.onShow();
    105         }
    106 
    107         return shellView;
    108     }
    109 
    110     @SuppressWarnings("unused")
    111     @CalledByNative
    112     private void closeShell(Shell shellView) {
    113         if (shellView == mActiveShell) mActiveShell = null;
    114         ContentView contentView = shellView.getContentView();
    115         if (contentView != null) contentView.onHide();
    116         shellView.setContentViewRenderView(null);
    117         shellView.setWindow(null);
    118         removeView(shellView);
    119     }
    120 
    121     private static native void nativeInit(Object shellManagerInstance);
    122     private static native void nativeLaunchShell(String url);
    123 }
    124