Adding drag target bar.
Change-Id: Ia00ed30264ea5f1d3c919111d15588ef441bfe20
diff --git a/src/com/android/launcher2/DeleteDropTarget.java b/src/com/android/launcher2/DeleteDropTarget.java
new file mode 100644
index 0000000..5c67793
--- /dev/null
+++ b/src/com/android/launcher2/DeleteDropTarget.java
@@ -0,0 +1,164 @@
+/*
+ * Copyright (C) 2011 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.Context;
+import android.content.res.Resources;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffColorFilter;
+import android.graphics.drawable.TransitionDrawable;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.android.launcher.R;
+
+public class DeleteDropTarget extends IconDropTarget {
+
+ private static final int sTransitionDuration = 0;
+
+ private TransitionDrawable mIcon;
+ private int mDefaultTextColor;
+ private int mHoverColor = 0xFFFF0000;
+
+ public DeleteDropTarget(Context context, AttributeSet attrs) {
+ this(context, attrs, 0);
+ }
+
+ public DeleteDropTarget(Context context, AttributeSet attrs, int defStyle) {
+ super(context, attrs, defStyle);
+ }
+
+ @Override
+ protected void onFinishInflate() {
+ super.onFinishInflate();
+
+ // Get the drawable
+ mIcon = (TransitionDrawable) getCompoundDrawables()[0];
+
+ // Get the hover color
+ Resources r = getResources();
+ mDefaultTextColor = getTextColors().getDefaultColor();
+ mHoverColor = r.getColor(R.color.delete_target_hover_tint);
+ mHoverPaint.setColorFilter(new PorterDuffColorFilter(
+ mHoverColor, PorterDuff.Mode.SRC_ATOP));
+ }
+
+ private boolean isAllAppsApplication(DragSource source, Object info) {
+ return (source instanceof AppsCustomizePagedView) && (info instanceof ApplicationInfo);
+ }
+ private boolean isAllAppsWidget(DragSource source, Object info) {
+ return (source instanceof AppsCustomizePagedView) && (info instanceof PendingAddWidgetInfo);
+ }
+ private boolean isWorkspaceApplication(DragObject d) {
+ return (d.dragSource instanceof Workspace) && (d.dragInfo instanceof ShortcutInfo);
+ }
+ private boolean isWorkspaceWidget(DragObject d) {
+ return (d.dragSource instanceof Workspace) && (d.dragInfo instanceof LauncherAppWidgetInfo);
+ }
+ private boolean isWorkspaceFolder(DragObject d) {
+ return (d.dragSource instanceof Workspace) && (d.dragInfo instanceof FolderInfo);
+ }
+
+ @Override
+ public boolean acceptDrop(DragObject d) {
+ // We can remove everything including App shortcuts, folders, widgets, etc.
+ return true;
+ }
+
+ @Override
+ public void onDragStart(DragSource source, Object info, int dragAction) {
+ ItemInfo item = (ItemInfo) info;
+ boolean isVisible = true;
+ boolean isUninstall = false;
+
+ // If we are dragging a widget from AppsCustomize , hide the delete target
+ if (isAllAppsWidget(source, info)) {
+ isVisible = false;
+ }
+
+ // If we are dragging an application from AppsCustomize, only show the control if we can
+ // delete the app (it was downloaded), and rename the string to "uninstall" in such a case
+ if (isAllAppsApplication(source, info)) {
+ ApplicationInfo appInfo = (ApplicationInfo) info;
+ if ((appInfo.flags & ApplicationInfo.DOWNLOADED_FLAG) != 0) {
+ isUninstall = true;
+ } else {
+ isVisible = false;
+ }
+ }
+
+ mActive = isVisible;
+ ((ViewGroup) getParent()).setVisibility(isVisible ? View.VISIBLE : View.GONE);
+ if (getText().length() > 0) {
+ setText(isUninstall ? R.string.delete_target_uninstall_label
+ : R.string.delete_target_label);
+ }
+ }
+
+ @Override
+ public void onDragEnd() {
+ super.onDragEnd();
+ mActive = false;
+ }
+
+ public void onDragEnter(DragObject d) {
+ super.onDragEnter(d);
+
+ mIcon.startTransition(sTransitionDuration);
+ setTextColor(mHoverColor);
+ }
+
+ public void onDragExit(DragObject d) {
+ super.onDragExit(d);
+
+ mIcon.reverseTransition(sTransitionDuration);
+ setTextColor(mDefaultTextColor);
+ }
+
+ public void onDrop(DragObject d) {
+ ItemInfo item = (ItemInfo) d.dragInfo;
+
+ if (isAllAppsApplication(d.dragSource, item)) {
+ // Uninstall the application if it is being dragged from AppsCustomize
+ mLauncher.startApplicationUninstallActivity((ApplicationInfo) item);
+ } else if (isWorkspaceApplication(d)) {
+ LauncherModel.deleteItemFromDatabase(mLauncher, item);
+ } else if (isWorkspaceFolder(d)) {
+ // Remove the folder from the workspace and delete the contents from launcher model
+ FolderInfo folderInfo = (FolderInfo) item;
+ mLauncher.removeFolder(folderInfo);
+ LauncherModel.deleteFolderContentsFromDatabase(mLauncher, folderInfo);
+ } else if (isWorkspaceWidget(d)) {
+ // Remove the widget from the workspace
+ mLauncher.removeAppWidget((LauncherAppWidgetInfo) item);
+ LauncherModel.deleteItemFromDatabase(mLauncher, item);
+
+ final LauncherAppWidgetInfo launcherAppWidgetInfo = (LauncherAppWidgetInfo) item;
+ final LauncherAppWidgetHost appWidgetHost = mLauncher.getAppWidgetHost();
+ if (appWidgetHost != null) {
+ // Deleting an app widget ID is a void call but writes to disk before returning
+ // to the caller...
+ new Thread("deleteAppWidgetId") {
+ public void run() {
+ appWidgetHost.deleteAppWidgetId(launcherAppWidgetInfo.appWidgetId);
+ }
+ }.start();
+ }
+ }
+ }
+}