"Clear all" button on recent apps

    Ported from ParanoidAndroid by zigackly:
    https://github.com/ParanoidAndroid/android_frameworks_base/commit/f8c44e6ef667a3ebe9b658f148fa78a8d4f9a8dd

    Add button to tablet layout ported from Codename Android by zigackly:
    https://github.com/CNA/android_frameworks_base/commit/8d259fe3588c261baa5a17c361255cf28cc82bfe

    Patch set 2: Make the layout consistent, with the button at the top right.

    Patch set 3: Remove the redundant use of removeTask()

    Patch set 4: Top right layout does not work in tablet mode: make it top left for tablets only.

    Patch set 5: Different implementation (No need to keep track of views) - Danesh M

    Patch set 6: Top left layout no longer works for tablet mode with new implementation.
                 Make it bottom left for tablets only.

Change-Id: Iceb86eef41160f1c17e51463b37fd97e27acfb2e

Conflicts:
	packages/SystemUI/res/layout-port/status_bar_recent_panel.xml
	packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java

Change-Id: I5f3827299866a951e657ce64bea7c5f31c34ef9e

3 files changed, 44 insertions, 1 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/recent/RecentsHorizontalScrollView.java b/packages/SystemUI/src/com/android/systemui/recent/RecentsHorizontalScrollView.java
index 6cb7dec..e436d5c 100644
--- a/packages/SystemUI/src/com/android/systemui/recent/RecentsHorizontalScrollView.java
+++ b/packages/SystemUI/src/com/android/systemui/recent/RecentsHorizontalScrollView.java
@@ -21,6 +21,7 @@ import android.content.Context;
 import android.content.res.Configuration;
 import android.database.DataSetObserver;
 import android.graphics.Canvas;
+import android.os.Handler;
 import android.util.AttributeSet;
 import android.util.DisplayMetrics;
 import android.util.FloatMath;
@@ -176,6 +177,21 @@ public class RecentsHorizontalScrollView extends HorizontalScrollView
         dismissChild(view);
     }
 
+    @Override
+    public void removeAllViewsInLayout() {
+        smoothScrollTo(0, 0);
+        int count = mLinearLayout.getChildCount();
+        for (int i = 0; i < count; i++) {
+            final View child = mLinearLayout.getChildAt(i);
+            postDelayed(new Runnable() {
+                @Override
+                public void run() {
+                    dismissChild(child);
+                }
+            }, i * 150);
+        }
+    }
+
     public boolean onInterceptTouchEvent(MotionEvent ev) {
         if (DEBUG) Log.v(TAG, "onInterceptTouchEvent()");
         return mSwipeHelper.onInterceptTouchEvent(ev) ||
diff --git a/packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java b/packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java
index cd3bc42..dcb82d4 100644
--- a/packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java
@@ -88,6 +88,7 @@ public class RecentsPanelView extends FrameLayout implements OnItemClickListener
     private boolean mFitThumbnailToXY;
     private int mRecentItemLayoutId;
     private boolean mHighEndGfx;
+    private ImageView mClearRecents;
 
     public static interface RecentsScrollView {
         public int numItemsInOneScreenful();
@@ -330,7 +331,7 @@ public class RecentsPanelView extends FrameLayout implements OnItemClickListener
                     && (mRecentTaskDescriptions.size() == 0);
             mRecentsNoApps.setAlpha(1f);
             mRecentsNoApps.setVisibility(noApps ? View.VISIBLE : View.INVISIBLE);
-
+            mClearRecents.setVisibility(noApps ? View.GONE : View.VISIBLE);
             onAnimationEnd(null);
             setFocusable(true);
             setFocusableInTouchMode(true);
@@ -434,6 +435,16 @@ public class RecentsPanelView extends FrameLayout implements OnItemClickListener
         mRecentsScrim = findViewById(R.id.recents_bg_protect);
         mRecentsNoApps = findViewById(R.id.recents_no_apps);
 
+        mClearRecents = (ImageView) findViewById(R.id.recents_clear);
+        if (mClearRecents != null){
+            mClearRecents.setOnClickListener(new OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    mRecentsContainer.removeAllViewsInLayout();
+                }
+            });
+        }
+
         if (mRecentsScrim != null) {
             mHighEndGfx = ActivityManager.isHighEndGfx();
             if (!mHighEndGfx) {
diff --git a/packages/SystemUI/src/com/android/systemui/recent/RecentsVerticalScrollView.java b/packages/SystemUI/src/com/android/systemui/recent/RecentsVerticalScrollView.java
index 47b0113..65f09b6 100644
--- a/packages/SystemUI/src/com/android/systemui/recent/RecentsVerticalScrollView.java
+++ b/packages/SystemUI/src/com/android/systemui/recent/RecentsVerticalScrollView.java
@@ -21,6 +21,7 @@ import android.content.Context;
 import android.content.res.Configuration;
 import android.database.DataSetObserver;
 import android.graphics.Canvas;
+import android.os.Handler;
 import android.util.AttributeSet;
 import android.util.DisplayMetrics;
 import android.util.FloatMath;
@@ -184,6 +185,21 @@ public class RecentsVerticalScrollView extends ScrollView
         dismissChild(view);
     }
 
+    @Override
+    public void removeAllViewsInLayout() {
+        smoothScrollTo(0, 0);
+        int count = mLinearLayout.getChildCount();
+        for (int i = 0; i < count; i++) {
+            final View child = mLinearLayout.getChildAt(i);
+            postDelayed(new Runnable() {
+                @Override
+                public void run() {
+                    dismissChild(child);
+                }
+            }, i * 150);
+        }
+    }
+
     public boolean onInterceptTouchEvent(MotionEvent ev) {
         if (DEBUG) Log.v(TAG, "onInterceptTouchEvent()");
         return mSwipeHelper.onInterceptTouchEvent(ev) ||