First commit

app/src/main/java/com/android/launcher2/ItemInfo.java

@@ -0,0 +1,194 @@
+/*
+ * Copyright (C) 2008 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.launcher2;
+
+import android.content.ContentValues;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.util.Log;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+
+/**
+ * Represents an item in the launcher.
+ */
+class ItemInfo {
+    
+    static final int NO_ID = -1;
+    
+    /**
+     * The id in the settings database for this item
+     */
+    long id = NO_ID;
+    
+    /**
+     * One of {@link LauncherSettings.Favorites#ITEM_TYPE_APPLICATION},
+     * {@link LauncherSettings.Favorites#ITEM_TYPE_SHORTCUT},
+     * {@link LauncherSettings.Favorites#ITEM_TYPE_FOLDER}, or
+     * {@link LauncherSettings.Favorites#ITEM_TYPE_APPWIDGET}.
+     */
+    int itemType;
+    
+    /**
+     * The id of the container that holds this item. For the desktop, this will be 
+     * {@link LauncherSettings.Favorites#CONTAINER_DESKTOP}. For the all applications folder it
+     * will be {@link #NO_ID} (since it is not stored in the settings DB). For user folders
+     * it will be the id of the folder.
+     */
+    long container = NO_ID;
+    
+    /**
+     * Iindicates the screen in which the shortcut appears.
+     */
+    int screen = -1;
+    
+    /**
+     * Indicates the X position of the associated cell.
+     */
+    int cellX = -1;
+
+    /**
+     * Indicates the Y position of the associated cell.
+     */
+    int cellY = -1;
+
+    /**
+     * Indicates the X cell span.
+     */
+    int spanX = 1;
+
+    /**
+     * Indicates the Y cell span.
+     */
+    int spanY = 1;
+
+    /**
+     * Indicates the minimum X cell span.
+     */
+    int minSpanX = 1;
+
+    /**
+     * Indicates the minimum Y cell span.
+     */
+    int minSpanY = 1;
+
+    /**
+     * Indicates that this item needs to be updated in the db
+     */
+    boolean requiresDbUpdate = false;
+
+    /**
+     * Title of the item
+     */
+    CharSequence title;
+
+    /**
+     * The position of the item in a drag-and-drop operation.
+     */
+    int[] dropPos = null;
+
+    ItemInfo() {
+    }
+
+    ItemInfo(ItemInfo info) {
+        id = info.id;
+        cellX = info.cellX;
+        cellY = info.cellY;
+        spanX = info.spanX;
+        spanY = info.spanY;
+        screen = info.screen;
+        itemType = info.itemType;
+        container = info.container;
+        // tempdebug:
+        LauncherModel.checkItemInfo(this);
+    }
+
+    /** Returns the package name that the intent will resolve to, or an empty string if
+     *  none exists. */
+    static String getPackageName(Intent intent) {
+        if (intent != null) {
+            String packageName = intent.getPackage();
+            if (packageName == null && intent.getComponent() != null) {
+                packageName = intent.getComponent().getPackageName();
+            }
+            if (packageName != null) {
+                return packageName;
+            }
+        }
+        return "";
+    }
+
+    /**
+     * Write the fields of this item to the DB
+     * 
+     * @param values
+     */
+    void onAddToDatabase(ContentValues values) { 
+        values.put(LauncherSettings.BaseLauncherColumns.ITEM_TYPE, itemType);
+        values.put(LauncherSettings.Favorites.CONTAINER, container);
+        values.put(LauncherSettings.Favorites.SCREEN, screen);
+        values.put(LauncherSettings.Favorites.CELLX, cellX);
+        values.put(LauncherSettings.Favorites.CELLY, cellY);
+        values.put(LauncherSettings.Favorites.SPANX, spanX);
+        values.put(LauncherSettings.Favorites.SPANY, spanY);
+    }
+
+    void updateValuesWithCoordinates(ContentValues values, int cellX, int cellY) {
+        values.put(LauncherSettings.Favorites.CELLX, cellX);
+        values.put(LauncherSettings.Favorites.CELLY, cellY);
+    }
+
+    static byte[] flattenBitmap(Bitmap bitmap) {
+        // Try go guesstimate how much space the icon will take when serialized
+        // to avoid unnecessary allocations/copies during the write.
+        int size = bitmap.getWidth() * bitmap.getHeight() * 4;
+        ByteArrayOutputStream out = new ByteArrayOutputStream(size);
+        try {
+            bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
+            out.flush();
+            out.close();
+            return out.toByteArray();
+        } catch (IOException e) {
+            Log.w("Favorite", "Could not write icon");
+            return null;
+        }
+    }
+
+    static void writeBitmap(ContentValues values, Bitmap bitmap) {
+        if (bitmap != null) {
+            byte[] data = flattenBitmap(bitmap);
+            values.put(LauncherSettings.Favorites.ICON, data);
+        }
+    }
+
+    /**
+     * It is very important that sub-classes implement this if they contain any references
+     * to the activity (anything in the view hierarchy etc.). If not, leaks can result since
+     * ItemInfo objects persist across rotation and can hence leak by holding stale references
+     * to the old view hierarchy / activity.
+     */
+    void unbind() {
+    }
+
+    @Override
+    public String toString() {
+        return "Item(id=" + this.id + " type=" + this.itemType + " container=" + this.container
+            + " screen=" + screen + " cellX=" + cellX + " cellY=" + cellY + " spanX=" + spanX
+            + " spanY=" + spanY + " dropPos=" + dropPos + ")";
+    }
+}