| /* |
| * 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.resetTransition(); |
| 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(); |
| } |
| } |
| } |
| } |