change package name to uiuios

src/com/android/uiuios/DeleteDropTarget.java

@@ -0,0 +1,156 @@
+/*
+ * 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.uiuios;
+
+import static com.android.uiuios.userevent.nano.LauncherLogProto.Action.Touch.TAP;
+import static com.android.uiuios.userevent.nano.LauncherLogProto.ControlType.UNDO;
+
+import android.content.Context;
+import android.text.TextUtils;
+import android.util.AttributeSet;
+import android.view.View;
+
+import com.android.uiuios.accessibility.LauncherAccessibilityDelegate;
+import com.android.uiuios.dragndrop.DragOptions;
+import com.android.uiuios.logging.LoggerUtils;
+import com.android.uiuios.model.ModelWriter;
+import com.android.uiuios.userevent.nano.LauncherLogProto.ControlType;
+import com.android.uiuios.userevent.nano.LauncherLogProto.Target;
+import com.android.uiuios.views.Snackbar;
+
+public class DeleteDropTarget extends ButtonDropTarget {
+
+    private int mControlType = ControlType.DEFAULT_CONTROLTYPE;
+
+    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 hover color
+        mHoverColor = getResources().getColor(R.color.delete_target_hover_tint);
+
+        setDrawable(R.drawable.ic_remove_shadow);
+    }
+
+    @Override
+    public void onDragStart(DropTarget.DragObject dragObject, DragOptions options) {
+        super.onDragStart(dragObject, options);
+        setTextBasedOnDragSource(dragObject.dragInfo);
+        setControlTypeBasedOnDragSource(dragObject.dragInfo);
+    }
+
+    /**
+     * @return true for items that should have a "Remove" action in accessibility.
+     */
+    @Override
+    public boolean supportsAccessibilityDrop(ItemInfo info, View view) {
+        if (info instanceof WorkspaceItemInfo) {
+            // Support the action unless the item is in a context menu.
+            return info.screenId >= 0;
+        }
+
+        return (info instanceof LauncherAppWidgetInfo)
+                || (info instanceof FolderInfo);
+    }
+
+    @Override
+    public int getAccessibilityAction() {
+        return LauncherAccessibilityDelegate.REMOVE;
+    }
+
+    @Override
+    protected boolean supportsDrop(ItemInfo info) {
+        return true;
+    }
+
+    /**
+     * Set the drop target's text to either "Remove" or "Cancel" depending on the drag item.
+     */
+    private void setTextBasedOnDragSource(ItemInfo item) {
+        if (!TextUtils.isEmpty(mText)) {
+            mText = getResources().getString(canRemove(item)
+                    ? R.string.remove_drop_target_label
+                    : android.R.string.cancel);
+            setContentDescription(mText);
+            requestLayout();
+        }
+    }
+
+    private boolean canRemove(ItemInfo item) {
+        return item.id != ItemInfo.NO_ID;
+    }
+
+    /**
+     * Set mControlType depending on the drag item.
+     */
+    private void setControlTypeBasedOnDragSource(ItemInfo item) {
+        mControlType = item.id != ItemInfo.NO_ID ? ControlType.REMOVE_TARGET
+                : ControlType.CANCEL_TARGET;
+    }
+
+    @Override
+    public void onDrop(DragObject d, DragOptions options) {
+        if (canRemove(d.dragInfo)) {
+            mLauncher.getModelWriter().prepareToUndoDelete();
+        }
+        super.onDrop(d, options);
+    }
+
+    @Override
+    public void completeDrop(DragObject d) {
+        ItemInfo item = d.dragInfo;
+        if (canRemove(item)) {
+            int itemPage = mLauncher.getWorkspace().getCurrentPage();
+            onAccessibilityDrop(null, item);
+            ModelWriter modelWriter = mLauncher.getModelWriter();
+            Runnable onUndoClicked = () -> {
+                modelWriter.abortDelete(itemPage);
+                mLauncher.getUserEventDispatcher().logActionOnControl(TAP, UNDO);
+            };
+            Snackbar.show(mLauncher, R.string.item_removed, R.string.undo,
+                    modelWriter::commitDelete, onUndoClicked);
+        }
+    }
+
+    /**
+     * Removes the item from the workspace. If the view is not null, it also removes the view.
+     */
+    @Override
+    public void onAccessibilityDrop(View view, ItemInfo item) {
+        // Remove the item from launcher and the db, we can ignore the containerInfo in this call
+        // because we already remove the drag view from the folder (if the drag originated from
+        // a folder) in Folder.beginDrag()
+        mLauncher.removeItem(view, item, true /* deleteFromDb */);
+        mLauncher.getWorkspace().stripEmptyScreens();
+        mLauncher.getDragLayer()
+                .announceForAccessibility(getContext().getString(R.string.item_removed));
+    }
+
+    @Override
+    public Target getDropTargetForLogging() {
+        Target t = LoggerUtils.newTarget(Target.Type.CONTROL);
+        t.controlType = mControlType;
+        return t;
+    }
+}