Fix6398209: reveal search when home button is long-pressed

This change add a feature to reveal the swipe to search interface
when the home key is pressed for longer than 50ms.  It progressively
reveals the interface.  It still requires a bit of tuning, but all
the basic parameters are in this CL.

Change-Id: I1d3a5bb7b912265eb41da68bc9313eee1af2e415

3 files changed, 36 insertions, 26 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/SearchPanelView.java b/packages/SystemUI/src/com/android/systemui/SearchPanelView.java
index 6b0bb87..478d652 100644
--- a/packages/SystemUI/src/com/android/systemui/SearchPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/SearchPanelView.java
@@ -18,6 +18,8 @@ package com.android.systemui;
 
 import android.animation.Animator;
 import android.animation.LayoutTransition;
+import android.app.ActivityManagerNative;
+import android.app.ActivityOptions;
 import android.app.SearchManager;
 import android.content.ActivityNotFoundException;
 import android.content.ComponentName;
@@ -36,6 +38,7 @@ import android.widget.FrameLayout;
 
 import com.android.internal.widget.multiwaveview.MultiWaveView;
 import com.android.internal.widget.multiwaveview.MultiWaveView.OnTriggerListener;
+import com.android.server.am.ActivityManagerService;
 import com.android.systemui.R;
 import com.android.systemui.recent.StatusBarTouchProxy;
 import com.android.systemui.statusbar.BaseStatusBar;
@@ -103,26 +106,20 @@ public class SearchPanelView extends FrameLayout implements
     }
 
     private void startAssistActivity() {
-        if (mSearchManager != null) {
-            ComponentName globalSearchActivity = mSearchManager.getGlobalSearchActivity();
-            if (globalSearchActivity != null) {
-                Intent intent = new Intent(Intent.ACTION_ASSIST);
-                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-                intent.setPackage(globalSearchActivity.getPackageName());
-                try {
-                    mContext.startActivity(intent);
-                } catch (ActivityNotFoundException e) {
-                    Slog.w(TAG, "Activity not found for " + intent.getAction());
-                }
-            } else {
-                Slog.w(TAG, "No global search activity");
-            }
+        Intent intent = getAssistIntent();
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        try {
+            mContext.startActivity(intent);
+        } catch (ActivityNotFoundException e) {
+            Slog.w(TAG, "Activity not found for " + intent.getAction());
         }
     }
 
     final MultiWaveView.OnTriggerListener mMultiWaveViewListener
             = new MultiWaveView.OnTriggerListener() {
 
+        private int mTarget = -1;
+
         public void onGrabbed(View v, int handle) {
         }
 
@@ -136,11 +133,18 @@ public class SearchPanelView extends FrameLayout implements
         }
 
         public void onTrigger(View v, int target) {
-            final int resId = mMultiWaveView.getResourceIdForTarget(target);
-            switch (resId) {
-                case com.android.internal.R.drawable.ic_lockscreen_search:
-                    startAssistActivity();
-                break;
+            mTarget = target;
+        }
+
+        public void onFinishFinalAnimation() {
+            if (mTarget != -1) {
+                final int resId = mMultiWaveView.getResourceIdForTarget(mTarget);
+                mTarget = -1; // a safety to make sure we never launch w/o prior call to onTrigger
+                switch (resId) {
+                    case com.android.internal.R.drawable.ic_lockscreen_search:
+                        startAssistActivity();
+                    break;
+                }
             }
             mBar.hideSearchPanel();
         }
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
index 69d2e73..d38611d 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
@@ -515,14 +515,8 @@ public class PhoneStatusBar extends BaseStatusBar {
         public boolean onTouch(View v, MotionEvent event) {
             switch(event.getAction()) {
                 case MotionEvent.ACTION_DOWN:
-                    Slog.d(TAG, "showing search panel");
                     showSearchPanel();
                 break;
-
-                case MotionEvent.ACTION_UP:
-                    Slog.d(TAG, "hiding search panel");
-                    hideSearchPanel();
-                break;
             }
             return false;
         }
@@ -533,8 +527,8 @@ public class PhoneStatusBar extends BaseStatusBar {
 
         mNavigationBarView.getRecentsButton().setOnClickListener(mRecentsClickListener);
         mNavigationBarView.getRecentsButton().setOnTouchListener(mRecentsPanel);
+        mNavigationBarView.getHomeButton().setOnTouchListener(mHomeSearchActionListener);
         updateSearchPanel();
-//        mNavigationBarView.getHomeButton().setOnTouchListener(mHomeSearchActionListener);
     }
 
     // For small-screen devices (read: phones) that lack hardware navigation buttons
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java
index dba1606..10c5dd8 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/tablet/TabletStatusBar.java
@@ -188,6 +188,17 @@ public class TabletStatusBar extends BaseStatusBar implements
 
     public Context getContext() { return mContext; }
 
+    private View.OnTouchListener mHomeSearchActionListener = new View.OnTouchListener() {
+        public boolean onTouch(View v, MotionEvent event) {
+            switch(event.getAction()) {
+                case MotionEvent.ACTION_DOWN:
+                    showSearchPanel();
+                break;
+            }
+            return false;
+        }
+    };
+
     @Override
     protected void createAndAddWindows() {
         addStatusBarWindow();
@@ -290,6 +301,7 @@ public class TabletStatusBar extends BaseStatusBar implements
 
         // Search Panel
         mStatusBarView.setBar(this);
+        mHomeButton.setOnTouchListener(mHomeSearchActionListener);
         updateSearchPanel();
 
         // Input methods Panel