added spring loaded mode for adding items to workspace
Change-Id: Ie92294fe2b1d6697d84756a2fcea91a09f72825b
diff --git a/src/com/android/launcher2/SpringLoadedDragController.java b/src/com/android/launcher2/SpringLoadedDragController.java
new file mode 100644
index 0000000..a734258
--- /dev/null
+++ b/src/com/android/launcher2/SpringLoadedDragController.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2010 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;
+
+public class SpringLoadedDragController implements OnAlarmListener {
+ // how long the user must hover over a mini-screen before it unshrinks
+ final long ENTER_SPRING_LOAD_HOVER_TIME = 1000;
+ final long EXIT_SPRING_LOAD_HOVER_TIME = 200;
+
+ Alarm mAlarm;
+
+ // the screen the user is currently hovering over, if any
+ private CellLayout mScreen;
+ private Launcher mLauncher;
+
+ public SpringLoadedDragController(Launcher launcher) {
+ mLauncher = launcher;
+ mAlarm = new Alarm();
+ mAlarm.setOnAlarmListener(this);
+ }
+
+ public void onDragEnter(CellLayout cl) {
+ mScreen = cl;
+ mAlarm.setAlarm(ENTER_SPRING_LOAD_HOVER_TIME);
+ }
+
+ public void onDragExit() {
+ if (mScreen != null) {
+ mScreen.onDragExit();
+ }
+ mScreen = null;
+ mAlarm.setAlarm(EXIT_SPRING_LOAD_HOVER_TIME);
+ }
+
+ // this is called when our timer runs out
+ public void onAlarm(Alarm alarm) {
+ if (mScreen != null) {
+ // we're currently hovering over a screen
+ mLauncher.enterSpringLoadedDragMode(mScreen);
+ } else {
+ mLauncher.exitSpringLoadedDragMode();
+ }
+ }
+}