1 files changed, 220 insertions, 0 deletions
diff --git a/java/com/android/dialer/app/widget/ActionBarController.java b/java/com/android/dialer/app/widget/ActionBarController.java
new file mode 100644
index 000000000..c1b4cc2b4
--- /dev/null
+++ b/java/com/android/dialer/app/widget/ActionBarController.java
@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) 2013 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.widget;
+
+import android.animation.ValueAnimator;
+import android.os.Bundle;
+import com.android.dialer.animation.AnimUtils.AnimationCallback;
+import com.android.dialer.common.LogUtil;
+
+/**
+ * Controls the various animated properties of the actionBar: showing/hiding, fading/revealing, and
+ * collapsing/expanding, and assigns suitable properties to the actionBar based on the current state
+ * of the UI.
+ */
+public class ActionBarController {
+
+  private static final String KEY_IS_SLID_UP = "key_actionbar_is_slid_up";
+  private static final String KEY_IS_FADED_OUT = "key_actionbar_is_faded_out";
+  private static final String KEY_IS_EXPANDED = "key_actionbar_is_expanded";
+
+  private ActivityUi mActivityUi;
+  private SearchEditTextLayout mSearchBox;
+
+  private boolean mIsActionBarSlidUp;
+
+  private final AnimationCallback mFadeOutCallback =
+      new AnimationCallback() {
+        @Override
+        public void onAnimationEnd() {
+          slideActionBar(true /* slideUp */, false /* animate */);
+        }
+
+        @Override
+        public void onAnimationCancel() {
+          slideActionBar(true /* slideUp */, false /* animate */);
+        }
+      };
+
+  private final AnimationCallback mFadeInCallback =
+      new AnimationCallback() {
+        @Override
+        public void onAnimationEnd() {
+          slideActionBar(false /* slideUp */, false /* animate */);
+        }
+
+        @Override
+        public void onAnimationCancel() {
+          slideActionBar(false /* slideUp */, false /* animate */);
+        }
+      };
+  private ValueAnimator mAnimator;
+
+  public ActionBarController(ActivityUi activityUi, SearchEditTextLayout searchBox) {
+    mActivityUi = activityUi;
+    mSearchBox = searchBox;
+  }
+
+  /** @return Whether or not the action bar is currently showing (both slid down and visible) */
+  public boolean isActionBarShowing() {
+    return !mIsActionBarSlidUp && !mSearchBox.isFadedOut();
+  }
+
+  /** Called when the user has tapped on the collapsed search box, to start a new search query. */
+  public void onSearchBoxTapped() {
+    LogUtil.d(
+        "ActionBarController.onSearchBoxTapped", "isInSearchUi " + mActivityUi.isInSearchUi());
+    if (!mActivityUi.isInSearchUi()) {
+      mSearchBox.expand(true /* animate */, true /* requestFocus */);
+    }
+  }
+
+  /** Called when search UI has been exited for some reason. */
+  public void onSearchUiExited() {
+    LogUtil.d(
+        "ActionBarController.onSearchUIExited",
+        "isExpanded: %b, isFadedOut %b",
+        mSearchBox.isExpanded(),
+        mSearchBox.isFadedOut());
+    if (mSearchBox.isExpanded()) {
+      mSearchBox.collapse(true /* animate */);
+    }
+    if (mSearchBox.isFadedOut()) {
+      mSearchBox.fadeIn();
+    }
+
+    slideActionBar(false /* slideUp */, false /* animate */);
+  }
+
+  /**
+   * Called to indicate that the user is trying to hide the dialpad. Should be called before any
+   * state changes have actually occurred.
+   */
+  public void onDialpadDown() {
+    LogUtil.d(
+        "ActionBarController.onDialpadDown",
+        "isInSearchUi: %b, hasSearchQuery: %b, isFadedOut: %b, isExpanded: %b",
+        mActivityUi.isInSearchUi(),
+        mActivityUi.hasSearchQuery(),
+        mSearchBox.isFadedOut(),
+        mSearchBox.isExpanded());
+    if (mActivityUi.isInSearchUi()) {
+      if (mActivityUi.hasSearchQuery()) {
+        if (mSearchBox.isFadedOut()) {
+          mSearchBox.setVisible(true);
+        }
+        if (!mSearchBox.isExpanded()) {
+          mSearchBox.expand(false /* animate */, false /* requestFocus */);
+        }
+        slideActionBar(false /* slideUp */, true /* animate */);
+      } else {
+        mSearchBox.fadeIn(mFadeInCallback);
+      }
+    }
+  }
+
+  /**
+   * Called to indicate that the user is trying to show the dialpad. Should be called before any
+   * state changes have actually occurred.
+   */
+  public void onDialpadUp() {
+    LogUtil.d("ActionBarController.onDialpadUp", "isInSearchUi " + mActivityUi.isInSearchUi());
+    if (mActivityUi.isInSearchUi()) {
+      slideActionBar(true /* slideUp */, true /* animate */);
+    } else {
+      // From the lists fragment
+      mSearchBox.fadeOut(mFadeOutCallback);
+    }
+  }
+
+  public void slideActionBar(boolean slideUp, boolean animate) {
+    LogUtil.d("ActionBarController.slidingActionBar", "up: %b, animate: %b", slideUp, animate);
+
+    if (mAnimator != null && mAnimator.isRunning()) {
+      mAnimator.cancel();
+      mAnimator.removeAllUpdateListeners();
+    }
+    if (animate) {
+      mAnimator = slideUp ? ValueAnimator.ofFloat(0, 1) : ValueAnimator.ofFloat(1, 0);
+      mAnimator.addUpdateListener(
+          animation -> {
+            final float value = (float) animation.getAnimatedValue();
+            setHideOffset((int) (mActivityUi.getActionBarHeight() * value));
+          });
+      mAnimator.start();
+    } else {
+      setHideOffset(slideUp ? mActivityUi.getActionBarHeight() : 0);
+    }
+    mIsActionBarSlidUp = slideUp;
+  }
+
+  public void setAlpha(float alphaValue) {
+    mSearchBox.animate().alpha(alphaValue).start();
+  }
+
+  private void setHideOffset(int offset) {
+    mActivityUi.setActionBarHideOffset(offset);
+  }
+
+  /** Saves the current state of the action bar into a provided {@link Bundle} */
+  public void saveInstanceState(Bundle outState) {
+    outState.putBoolean(KEY_IS_SLID_UP, mIsActionBarSlidUp);
+    outState.putBoolean(KEY_IS_FADED_OUT, mSearchBox.isFadedOut());
+    outState.putBoolean(KEY_IS_EXPANDED, mSearchBox.isExpanded());
+  }
+
+  /** Restores the action bar state from a provided {@link Bundle}. */
+  public void restoreInstanceState(Bundle inState) {
+    mIsActionBarSlidUp = inState.getBoolean(KEY_IS_SLID_UP);
+
+    final boolean isSearchBoxFadedOut = inState.getBoolean(KEY_IS_FADED_OUT);
+    if (isSearchBoxFadedOut) {
+      if (!mSearchBox.isFadedOut()) {
+        mSearchBox.setVisible(false);
+      }
+    } else if (mSearchBox.isFadedOut()) {
+      mSearchBox.setVisible(true);
+    }
+
+    final boolean isSearchBoxExpanded = inState.getBoolean(KEY_IS_EXPANDED);
+    if (isSearchBoxExpanded) {
+      if (!mSearchBox.isExpanded()) {
+        mSearchBox.expand(false, false);
+      }
+    } else if (mSearchBox.isExpanded()) {
+      mSearchBox.collapse(false);
+    }
+  }
+
+  /**
+   * This should be called after onCreateOptionsMenu has been called, when the actionbar has been
+   * laid out and actually has a height.
+   */
+  public void restoreActionBarOffset() {
+    slideActionBar(mIsActionBarSlidUp /* slideUp */, false /* animate */);
+  }
+
+  public interface ActivityUi {
+
+    boolean isInSearchUi();
+
+    boolean hasSearchQuery();
+
+    int getActionBarHeight();
+
+    void setActionBarHideOffset(int offset);
+  }
+}