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/*
* Copyright (C) 2021 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.launcher3.taskbar;
import static android.view.View.INVISIBLE;
import static android.view.View.VISIBLE;
import android.content.ClipData;
import android.content.ClipDescription;
import android.content.Intent;
import android.content.pm.LauncherApps;
import android.content.res.Resources;
import android.graphics.Canvas;
import android.graphics.Point;
import android.os.UserHandle;
import android.view.DragEvent;
import android.view.View;
import com.android.launcher3.BaseQuickstepLauncher;
import com.android.launcher3.BubbleTextView;
import com.android.launcher3.LauncherSettings;
import com.android.launcher3.R;
import com.android.launcher3.model.data.WorkspaceItemInfo;
import com.android.systemui.shared.recents.model.Task;
import com.android.systemui.shared.system.ClipDescriptionCompat;
import com.android.systemui.shared.system.LauncherAppsCompat;
/**
* Handles long click on Taskbar items to start a system drag and drop operation.
*/
public class TaskbarDragController {
private final BaseQuickstepLauncher mLauncher;
private final int mDragIconSize;
public TaskbarDragController(BaseQuickstepLauncher launcher) {
mLauncher = launcher;
Resources resources = mLauncher.getResources();
mDragIconSize = resources.getDimensionPixelSize(R.dimen.taskbar_icon_drag_icon_size);
}
/**
* Attempts to start a system drag and drop operation for the given View, using its tag to
* generate the ClipDescription and Intent.
* @return Whether {@link View#startDragAndDrop} started successfully.
*/
protected boolean startDragOnLongClick(View view) {
if (!(view instanceof BubbleTextView)) {
return false;
}
BubbleTextView btv = (BubbleTextView) view;
View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(view) {
@Override
public void onProvideShadowMetrics(Point shadowSize, Point shadowTouchPoint) {
shadowSize.set(mDragIconSize, mDragIconSize);
// TODO: should be based on last touch point on the icon.
shadowTouchPoint.set(shadowSize.x / 2, shadowSize.y / 2);
}
@Override
public void onDrawShadow(Canvas canvas) {
canvas.save();
float scale = (float) mDragIconSize / btv.getIconSize();
canvas.scale(scale, scale);
btv.getIcon().draw(canvas);
canvas.restore();
}
};
Object tag = view.getTag();
ClipDescription clipDescription = null;
Intent intent = null;
if (tag instanceof WorkspaceItemInfo) {
WorkspaceItemInfo item = (WorkspaceItemInfo) tag;
LauncherApps launcherApps = mLauncher.getSystemService(LauncherApps.class);
clipDescription = new ClipDescription(item.title,
new String[] {
item.itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT
? ClipDescriptionCompat.MIMETYPE_APPLICATION_SHORTCUT
: ClipDescriptionCompat.MIMETYPE_APPLICATION_ACTIVITY
});
intent = new Intent();
if (item.itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT) {
intent.putExtra(Intent.EXTRA_PACKAGE_NAME, item.getIntent().getPackage());
intent.putExtra(Intent.EXTRA_SHORTCUT_ID, item.getDeepShortcutId());
} else {
intent.putExtra(ClipDescriptionCompat.EXTRA_PENDING_INTENT,
LauncherAppsCompat.getMainActivityLaunchIntent(launcherApps,
item.getIntent().getComponent(), null, item.user));
}
intent.putExtra(Intent.EXTRA_USER, item.user);
} else if (tag instanceof Task) {
Task task = (Task) tag;
clipDescription = new ClipDescription(task.titleDescription,
new String[] {
ClipDescriptionCompat.MIMETYPE_APPLICATION_TASK
});
intent = new Intent();
intent.putExtra(ClipDescriptionCompat.EXTRA_TASK_ID, task.key.id);
intent.putExtra(Intent.EXTRA_USER, UserHandle.of(task.key.userId));
}
if (clipDescription != null && intent != null) {
ClipData clipData = new ClipData(clipDescription, new ClipData.Item(intent));
view.setOnDragListener(getDraggedViewDragListener());
return view.startDragAndDrop(clipData, shadowBuilder, null /* localState */,
View.DRAG_FLAG_GLOBAL | View.DRAG_FLAG_OPAQUE);
}
return false;
}
/**
* Hide the original Taskbar item while it is being dragged.
*/
private View.OnDragListener getDraggedViewDragListener() {
return (view, dragEvent) -> {
switch (dragEvent.getAction()) {
case DragEvent.ACTION_DRAG_STARTED:
view.setVisibility(INVISIBLE);
return true;
case DragEvent.ACTION_DRAG_ENDED:
view.setVisibility(VISIBLE);
view.setOnDragListener(null);
return true;
}
return false;
};
}
}
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