1 files changed, 315 insertions, 0 deletions
diff --git a/java/com/android/dialer/app/list/PhoneFavoriteListView.java b/java/com/android/dialer/app/list/PhoneFavoriteListView.java
new file mode 100644
index 000000000..9516f0611
--- /dev/null
+++ b/java/com/android/dialer/app/list/PhoneFavoriteListView.java
@@ -0,0 +1,315 @@
+/*
+ * Copyright (C) 2012 Google Inc.
+ * Licensed to 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.dialer.app.list;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.content.Context;
+import android.content.res.Configuration;
+import android.graphics.Bitmap;
+import android.os.Handler;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.DragEvent;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewConfiguration;
+import android.widget.GridView;
+import android.widget.ImageView;
+import com.android.dialer.app.R;
+import com.android.dialer.app.list.DragDropController.DragItemContainer;
+
+/** Viewgroup that presents the user's speed dial contacts in a grid. */
+public class PhoneFavoriteListView extends GridView
+    implements OnDragDropListener, DragItemContainer {
+
+  public static final String LOG_TAG = PhoneFavoriteListView.class.getSimpleName();
+  final int[] mLocationOnScreen = new int[2];
+  private final long SCROLL_HANDLER_DELAY_MILLIS = 5;
+  private final int DRAG_SCROLL_PX_UNIT = 25;
+  private final float DRAG_SHADOW_ALPHA = 0.7f;
+  /**
+   * {@link #mTopScrollBound} and {@link mBottomScrollBound} will be offseted to the top / bottom by
+   * {@link #getHeight} * {@link #BOUND_GAP_RATIO} pixels.
+   */
+  private final float BOUND_GAP_RATIO = 0.2f;
+
+  private float mTouchSlop;
+  private int mTopScrollBound;
+  private int mBottomScrollBound;
+  private int mLastDragY;
+  private Handler mScrollHandler;
+  private final Runnable mDragScroller =
+      new Runnable() {
+        @Override
+        public void run() {
+          if (mLastDragY <= mTopScrollBound) {
+            smoothScrollBy(-DRAG_SCROLL_PX_UNIT, (int) SCROLL_HANDLER_DELAY_MILLIS);
+          } else if (mLastDragY >= mBottomScrollBound) {
+            smoothScrollBy(DRAG_SCROLL_PX_UNIT, (int) SCROLL_HANDLER_DELAY_MILLIS);
+          }
+          mScrollHandler.postDelayed(this, SCROLL_HANDLER_DELAY_MILLIS);
+        }
+      };
+  private boolean mIsDragScrollerRunning = false;
+  private int mTouchDownForDragStartX;
+  private int mTouchDownForDragStartY;
+  private Bitmap mDragShadowBitmap;
+  private ImageView mDragShadowOverlay;
+  private final AnimatorListenerAdapter mDragShadowOverAnimatorListener =
+      new AnimatorListenerAdapter() {
+        @Override
+        public void onAnimationEnd(Animator animation) {
+          if (mDragShadowBitmap != null) {
+            mDragShadowBitmap.recycle();
+            mDragShadowBitmap = null;
+          }
+          mDragShadowOverlay.setVisibility(GONE);
+          mDragShadowOverlay.setImageBitmap(null);
+        }
+      };
+  private View mDragShadowParent;
+  private int mAnimationDuration;
+  // X and Y offsets inside the item from where the user grabbed to the
+  // child's left coordinate. This is used to aid in the drawing of the drag shadow.
+  private int mTouchOffsetToChildLeft;
+  private int mTouchOffsetToChildTop;
+  private int mDragShadowLeft;
+  private int mDragShadowTop;
+  private DragDropController mDragDropController = new DragDropController(this);
+
+  public PhoneFavoriteListView(Context context) {
+    this(context, null);
+  }
+
+  public PhoneFavoriteListView(Context context, AttributeSet attrs) {
+    this(context, attrs, -1);
+  }
+
+  public PhoneFavoriteListView(Context context, AttributeSet attrs, int defStyle) {
+    super(context, attrs, defStyle);
+    mAnimationDuration = context.getResources().getInteger(R.integer.fade_duration);
+    mTouchSlop = ViewConfiguration.get(context).getScaledPagingTouchSlop();
+    mDragDropController.addOnDragDropListener(this);
+  }
+
+  @Override
+  protected void onConfigurationChanged(Configuration newConfig) {
+    super.onConfigurationChanged(newConfig);
+    mTouchSlop = ViewConfiguration.get(getContext()).getScaledPagingTouchSlop();
+  }
+
+  /**
+   * TODO: This is all swipe to remove code (nothing to do with drag to remove). This should be
+   * cleaned up and removed once drag to remove becomes the only way to remove contacts.
+   */
+  @Override
+  public boolean onInterceptTouchEvent(MotionEvent ev) {
+    if (ev.getAction() == MotionEvent.ACTION_DOWN) {
+      mTouchDownForDragStartX = (int) ev.getX();
+      mTouchDownForDragStartY = (int) ev.getY();
+    }
+
+    return super.onInterceptTouchEvent(ev);
+  }
+
+  @Override
+  public boolean onDragEvent(DragEvent event) {
+    final int action = event.getAction();
+    final int eX = (int) event.getX();
+    final int eY = (int) event.getY();
+    switch (action) {
+      case DragEvent.ACTION_DRAG_STARTED:
+        {
+          if (!PhoneFavoriteTileView.DRAG_PHONE_FAVORITE_TILE.equals(event.getLocalState())) {
+            // Ignore any drag events that were not propagated by long pressing
+            // on a {@link PhoneFavoriteTileView}
+            return false;
+          }
+          if (!mDragDropController.handleDragStarted(this, eX, eY)) {
+            return false;
+          }
+          break;
+        }
+      case DragEvent.ACTION_DRAG_LOCATION:
+        mLastDragY = eY;
+        mDragDropController.handleDragHovered(this, eX, eY);
+        // Kick off {@link #mScrollHandler} if it's not started yet.
+        if (!mIsDragScrollerRunning
+            &&
+            // And if the distance traveled while dragging exceeds the touch slop
+            (Math.abs(mLastDragY - mTouchDownForDragStartY) >= 4 * mTouchSlop)) {
+          mIsDragScrollerRunning = true;
+          ensureScrollHandler();
+          mScrollHandler.postDelayed(mDragScroller, SCROLL_HANDLER_DELAY_MILLIS);
+        }
+        break;
+      case DragEvent.ACTION_DRAG_ENTERED:
+        final int boundGap = (int) (getHeight() * BOUND_GAP_RATIO);
+        mTopScrollBound = (getTop() + boundGap);
+        mBottomScrollBound = (getBottom() - boundGap);
+        break;
+      case DragEvent.ACTION_DRAG_EXITED:
+      case DragEvent.ACTION_DRAG_ENDED:
+      case DragEvent.ACTION_DROP:
+        ensureScrollHandler();
+        mScrollHandler.removeCallbacks(mDragScroller);
+        mIsDragScrollerRunning = false;
+        // Either a successful drop or it's ended with out drop.
+        if (action == DragEvent.ACTION_DROP || action == DragEvent.ACTION_DRAG_ENDED) {
+          mDragDropController.handleDragFinished(eX, eY, false);
+        }
+        break;
+      default:
+        break;
+    }
+    // This ListView will consume the drag events on behalf of its children.
+    return true;
+  }
+
+  public void setDragShadowOverlay(ImageView overlay) {
+    mDragShadowOverlay = overlay;
+    mDragShadowParent = (View) mDragShadowOverlay.getParent();
+  }
+
+  /** Find the view under the pointer. */
+  private View getViewAtPosition(int x, int y) {
+    final int count = getChildCount();
+    View child;
+    for (int childIdx = 0; childIdx < count; childIdx++) {
+      child = getChildAt(childIdx);
+      if (y >= child.getTop()
+          && y <= child.getBottom()
+          && x >= child.getLeft()
+          && x <= child.getRight()) {
+        return child;
+      }
+    }
+    return null;
+  }
+
+  private void ensureScrollHandler() {
+    if (mScrollHandler == null) {
+      mScrollHandler = getHandler();
+    }
+  }
+
+  public DragDropController getDragDropController() {
+    return mDragDropController;
+  }
+
+  @Override
+  public void onDragStarted(int x, int y, PhoneFavoriteSquareTileView tileView) {
+    if (mDragShadowOverlay == null) {
+      return;
+    }
+
+    mDragShadowOverlay.clearAnimation();
+    mDragShadowBitmap = createDraggedChildBitmap(tileView);
+    if (mDragShadowBitmap == null) {
+      return;
+    }
+
+    tileView.getLocationOnScreen(mLocationOnScreen);
+    mDragShadowLeft = mLocationOnScreen[0];
+    mDragShadowTop = mLocationOnScreen[1];
+
+    // x and y are the coordinates of the on-screen touch event. Using these
+    // and the on-screen location of the tileView, calculate the difference between
+    // the position of the user's finger and the position of the tileView. These will
+    // be used to offset the location of the drag shadow so that it appears that the
+    // tileView is positioned directly under the user's finger.
+    mTouchOffsetToChildLeft = x - mDragShadowLeft;
+    mTouchOffsetToChildTop = y - mDragShadowTop;
+
+    mDragShadowParent.getLocationOnScreen(mLocationOnScreen);
+    mDragShadowLeft -= mLocationOnScreen[0];
+    mDragShadowTop -= mLocationOnScreen[1];
+
+    mDragShadowOverlay.setImageBitmap(mDragShadowBitmap);
+    mDragShadowOverlay.setVisibility(VISIBLE);
+    mDragShadowOverlay.setAlpha(DRAG_SHADOW_ALPHA);
+
+    mDragShadowOverlay.setX(mDragShadowLeft);
+    mDragShadowOverlay.setY(mDragShadowTop);
+  }
+
+  @Override
+  public void onDragHovered(int x, int y, PhoneFavoriteSquareTileView tileView) {
+    // Update the drag shadow location.
+    mDragShadowParent.getLocationOnScreen(mLocationOnScreen);
+    mDragShadowLeft = x - mTouchOffsetToChildLeft - mLocationOnScreen[0];
+    mDragShadowTop = y - mTouchOffsetToChildTop - mLocationOnScreen[1];
+    // Draw the drag shadow at its last known location if the drag shadow exists.
+    if (mDragShadowOverlay != null) {
+      mDragShadowOverlay.setX(mDragShadowLeft);
+      mDragShadowOverlay.setY(mDragShadowTop);
+    }
+  }
+
+  @Override
+  public void onDragFinished(int x, int y) {
+    if (mDragShadowOverlay != null) {
+      mDragShadowOverlay.clearAnimation();
+      mDragShadowOverlay
+          .animate()
+          .alpha(0.0f)
+          .setDuration(mAnimationDuration)
+          .setListener(mDragShadowOverAnimatorListener)
+          .start();
+    }
+  }
+
+  @Override
+  public void onDroppedOnRemove() {}
+
+  private Bitmap createDraggedChildBitmap(View view) {
+    view.setDrawingCacheEnabled(true);
+    final Bitmap cache = view.getDrawingCache();
+
+    Bitmap bitmap = null;
+    if (cache != null) {
+      try {
+        bitmap = cache.copy(Bitmap.Config.ARGB_8888, false);
+      } catch (final OutOfMemoryError e) {
+        Log.w(LOG_TAG, "Failed to copy bitmap from Drawing cache", e);
+        bitmap = null;
+      }
+    }
+
+    view.destroyDrawingCache();
+    view.setDrawingCacheEnabled(false);
+
+    return bitmap;
+  }
+
+  @Override
+  public PhoneFavoriteSquareTileView getViewForLocation(int x, int y) {
+    getLocationOnScreen(mLocationOnScreen);
+    // Calculate the X and Y coordinates of the drag event relative to the view
+    final int viewX = x - mLocationOnScreen[0];
+    final int viewY = y - mLocationOnScreen[1];
+    final View child = getViewAtPosition(viewX, viewY);
+
+    if (!(child instanceof PhoneFavoriteSquareTileView)) {
+      return null;
+    }
+
+    return (PhoneFavoriteSquareTileView) child;
+  }
+}