Adding drag target bar.

Change-Id: Ia00ed30264ea5f1d3c919111d15588ef441bfe20

1 files changed, 108 insertions, 0 deletions

diff --git a/src/com/android/launcher2/InfoDropTarget.java b/src/com/android/launcher2/InfoDropTarget.java
new file mode 100644
index 000000000..bbde2b846
--- /dev/null
+++ b/src/com/android/launcher2/InfoDropTarget.java
@@ -0,0 +1,108 @@
+/*
+ * 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.ComponentName;
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffColorFilter;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.android.launcher.R;
+
+public class InfoDropTarget extends IconDropTarget {
+
+    private int mDefaultTextColor;
+    private int mHoverColor = 0xFF0000FF;
+
+    public InfoDropTarget(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public InfoDropTarget(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+
+        // Get the hover color
+        Resources r = getResources();
+        mDefaultTextColor = getTextColors().getDefaultColor();
+        mHoverColor = r.getColor(R.color.info_target_hover_tint);
+        mHoverPaint.setColorFilter(new PorterDuffColorFilter(
+                mHoverColor, PorterDuff.Mode.SRC_ATOP));
+    }
+
+    private boolean isApplication(Object info) {
+        if (info instanceof ApplicationInfo) return true;
+        return (((ItemInfo) info).itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION);
+    }
+
+    @Override
+    public boolean acceptDrop(DragObject d) {
+        // acceptDrop is called just before onDrop. We do the work here, rather than
+        // in onDrop, because it allows us to reject the drop (by returning false)
+        // so that the object being dragged isn't removed from the drag source.
+        ComponentName componentName = null;
+        if (d.dragInfo instanceof ApplicationInfo) {
+            componentName = ((ApplicationInfo) d.dragInfo).componentName;
+        } else if (d.dragInfo instanceof ShortcutInfo) {
+            componentName = ((ShortcutInfo) d.dragInfo).intent.getComponent();
+        }
+        if (componentName != null) {
+            mLauncher.startApplicationDetailsActivity(componentName);
+        }
+        return false;
+    }
+
+    @Override
+    public void onDragStart(DragSource source, Object info, int dragAction) {
+        ItemInfo item = (ItemInfo) info;
+        boolean isVisible = true;
+
+        // If we are dragging a widget or shortcut, hide the info target
+        if (!isApplication(info)) {
+            isVisible = false;
+        }
+
+        mActive = isVisible;
+        ((ViewGroup) getParent()).setVisibility(isVisible ? View.VISIBLE : View.GONE);
+    }
+
+    @Override
+    public void onDragEnd() {
+        super.onDragEnd();
+        mActive = false;
+    }
+
+    public void onDragEnter(DragObject d) {
+        super.onDragEnter(d);
+
+        setTextColor(mHoverColor);
+    }
+
+    public void onDragExit(DragObject d) {
+        super.onDragExit(d);
+
+        setTextColor(mDefaultTextColor);
+    }
+}