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package com.android.launcher3;
import android.annotation.TargetApi;
import android.content.ComponentName;
import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import android.os.UserManager;
import android.util.AttributeSet;
import android.util.Pair;
import com.android.launcher3.R;
import com.android.launcher3.compat.UserHandleCompat;
import com.android.launcher3.util.Thunk;
public class UninstallDropTarget extends ButtonDropTarget {
public UninstallDropTarget(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public UninstallDropTarget(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
// Get the hover color
mHoverColor = getResources().getColor(R.color.uninstall_target_hover_tint);
setDrawable(R.drawable.ic_uninstall_launcher);
}
@Override
protected boolean supportsDrop(DragSource source, Object info) {
return supportsDrop(getContext(), info);
}
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
public static boolean supportsDrop(Context context, Object info) {
if (Utilities.ATLEAST_JB_MR2) {
UserManager userManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
Bundle restrictions = userManager.getUserRestrictions();
if (restrictions.getBoolean(UserManager.DISALLOW_APPS_CONTROL, false)
|| restrictions.getBoolean(UserManager.DISALLOW_UNINSTALL_APPS, false)) {
return false;
}
}
Pair<ComponentName, Integer> componentInfo = getAppInfoFlags(info);
return componentInfo != null && (componentInfo.second & AppInfo.DOWNLOADED_FLAG) != 0;
}
/**
* @return the component name and flags if {@param info} is an AppInfo or an app shortcut.
*/
private static Pair<ComponentName, Integer> getAppInfoFlags(Object item) {
if (item instanceof AppInfo) {
AppInfo info = (AppInfo) item;
return Pair.create(info.componentName, info.flags);
} else if (item instanceof ShortcutInfo) {
ShortcutInfo info = (ShortcutInfo) item;
ComponentName component = info.getTargetComponent();
if (info.itemType == LauncherSettings.BaseLauncherColumns.ITEM_TYPE_APPLICATION
&& component != null) {
return Pair.create(component, info.flags);
}
}
return null;
}
@Override
public void onDrop(DragObject d) {
// Differ item deletion
if (d.dragSource instanceof UninstallSource) {
((UninstallSource) d.dragSource).deferCompleteDropAfterUninstallActivity();
}
super.onDrop(d);
}
@Override
void completeDrop(final DragObject d) {
final Pair<ComponentName, Integer> componentInfo = getAppInfoFlags(d.dragInfo);
final UserHandleCompat user = ((ItemInfo) d.dragInfo).user;
if (startUninstallActivity(mLauncher, d.dragInfo)) {
final Runnable checkIfUninstallWasSuccess = new Runnable() {
@Override
public void run() {
String packageName = componentInfo.first.getPackageName();
boolean uninstallSuccessful = !AllAppsList.packageHasActivities(
getContext(), packageName, user);
sendUninstallResult(d.dragSource, uninstallSuccessful);
}
};
mLauncher.addOnResumeCallback(checkIfUninstallWasSuccess);
} else {
sendUninstallResult(d.dragSource, false);
}
}
public static boolean startUninstallActivity(Launcher launcher, Object info) {
final Pair<ComponentName, Integer> componentInfo = getAppInfoFlags(info);
final UserHandleCompat user = ((ItemInfo) info).user;
return launcher.startApplicationUninstallActivity(
componentInfo.first, componentInfo.second, user);
}
@Thunk void sendUninstallResult(DragSource target, boolean result) {
if (target instanceof UninstallSource) {
((UninstallSource) target).onUninstallActivityReturned(result);
}
}
/**
* Interface defining an object that can provide uninstallable drag objects.
*/
public static interface UninstallSource {
/**
* A pending uninstall operation was complete.
* @param result true if uninstall was successful, false otherwise.
*/
void onUninstallActivityReturned(boolean result);
/**
* Indicates that an uninstall request are made and the actual result may come
* after some time.
*/
void deferCompleteDropAfterUninstallActivity();
}
}
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