Controller Refactor

    Bug: 3170671
    First step towards a model/view/control design in Browser
    introduced Controller object
    started separating UI code
    represent state of the app in one place only

Change-Id: Ica387d6bde2dcf1a4993c3db0cce498cf34ff60f

1 files changed, 127 insertions, 0 deletions

diff --git a/src/com/android/browser/WallpaperHandler.java b/src/com/android/browser/WallpaperHandler.java
new file mode 100644
index 00000000..0c88a50f
--- /dev/null
+++ b/src/com/android/browser/WallpaperHandler.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.browser;
+
+import android.app.ProgressDialog;
+import android.app.WallpaperManager;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.drawable.Drawable;
+import android.util.Log;
+import android.view.MenuItem;
+import android.view.MenuItem.OnMenuItemClickListener;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+/**
+ * Handle setWallpaper requests
+ *
+ */
+public class WallpaperHandler extends Thread
+        implements OnMenuItemClickListener, DialogInterface.OnCancelListener {
+
+
+    private static final String LOGTAG = "WallpaperHandler";
+
+    private Context mContext;
+    private URL mUrl;
+    private ProgressDialog mWallpaperProgress;
+    private boolean mCanceled = false;
+
+    public WallpaperHandler(Context context, String url) {
+        mContext = context;
+        try {
+            mUrl = new URL(url);
+        } catch (MalformedURLException e) {
+            mUrl = null;
+        }
+    }
+
+    @Override
+    public void onCancel(DialogInterface dialog) {
+        mCanceled = true;
+    }
+
+    @Override
+    public boolean onMenuItemClick(MenuItem item) {
+        if (mUrl != null) {
+            // The user may have tried to set a image with a large file size as
+            // their background so it may take a few moments to perform the
+            // operation.
+            // Display a progress spinner while it is working.
+            mWallpaperProgress = new ProgressDialog(mContext);
+            mWallpaperProgress.setIndeterminate(true);
+            mWallpaperProgress.setMessage(mContext.getResources()
+                    .getText(R.string.progress_dialog_setting_wallpaper));
+            mWallpaperProgress.setCancelable(true);
+            mWallpaperProgress.setOnCancelListener(this);
+            mWallpaperProgress.show();
+            start();
+        }
+        return true;
+    }
+
+    @Override
+    public void run() {
+        Drawable oldWallpaper =
+                WallpaperManager.getInstance(mContext).getDrawable();
+        try {
+            // TODO: This will cause the resource to be downloaded again, when
+            // we should in most cases be able to grab it from the cache. To fix
+            // this we should query WebCore to see if we can access a cached
+            // version and instead open an input stream on that. This pattern
+            // could also be used in the download manager where the same problem
+            // exists.
+            InputStream inputstream = mUrl.openStream();
+            if (inputstream != null) {
+                WallpaperManager.getInstance(mContext).setStream(inputstream);
+            }
+        } catch (IOException e) {
+            Log.e(LOGTAG, "Unable to set new wallpaper");
+            // Act as though the user canceled the operation so we try to
+            // restore the old wallpaper.
+            mCanceled = true;
+        }
+
+        if (mCanceled) {
+            // Restore the old wallpaper if the user cancelled whilst we were
+            // setting
+            // the new wallpaper.
+            int width = oldWallpaper.getIntrinsicWidth();
+            int height = oldWallpaper.getIntrinsicHeight();
+            Bitmap bm = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
+            Canvas canvas = new Canvas(bm);
+            oldWallpaper.setBounds(0, 0, width, height);
+            oldWallpaper.draw(canvas);
+            try {
+                WallpaperManager.getInstance(mContext).setBitmap(bm);
+            } catch (IOException e) {
+                Log.e(LOGTAG, "Unable to restore old wallpaper.");
+            }
+            mCanceled = false;
+        }
+
+        if (mWallpaperProgress.isShowing()) {
+            mWallpaperProgress.dismiss();
+        }
+    }
+}