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/*
* Copyright (C) 2011 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.launcher3;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.TimeInterpolator;
import android.content.Context;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewDebug;
import android.view.accessibility.AccessibilityManager;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import com.android.launcher3.dragndrop.DragController;
import com.android.launcher3.util.Thunk;
/*
* This bar will manage the transition between the QSB search bar and the delete/uninstall drop
* targets so that each of the individual ButtonDropTargets don't have to.
*/
public class SearchDropTargetBar extends BaseDropTargetBar {
private static final TimeInterpolator MOVE_DOWN_INTERPOLATOR = new DecelerateInterpolator(0.6f);
private static final TimeInterpolator MOVE_UP_INTERPOLATOR = new DecelerateInterpolator(1.5f);
/** The different states that the search bar space can be in. */
public enum State {
INVISIBLE (0f, 0f, 0f),
INVISIBLE_TRANSLATED (0f, 0f, -1f),
SEARCH_BAR (1f, 0f, 0f),
DROP_TARGET (0f, 1f, 0f);
private final float mSearchBarAlpha;
private final float mDropTargetBarAlpha;
private final float mTranslation;
State(float sbAlpha, float dtbAlpha, float translation) {
mSearchBarAlpha = sbAlpha;
mDropTargetBarAlpha = dtbAlpha;
mTranslation = translation;
}
}
@ViewDebug.ExportedProperty(category = "launcher")
private State mState = State.SEARCH_BAR;
@Thunk View mQSB;
// Drop targets
private ButtonDropTarget mDeleteDropTarget;
private ButtonDropTarget mUninstallDropTarget;
public SearchDropTargetBar(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public SearchDropTargetBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
// Get the individual components
mDeleteDropTarget = (ButtonDropTarget) mDropTargetBar.findViewById(R.id.delete_target_text);
mUninstallDropTarget = (ButtonDropTarget) mDropTargetBar
.findViewById(R.id.uninstall_target_text);
mDeleteDropTarget.setDropTargetBar(this);
mUninstallDropTarget.setDropTargetBar(this);
}
@Override
public void setup(Launcher launcher, DragController dragController) {
dragController.addDragListener(this);
dragController.setFlingToDeleteDropTarget(mDeleteDropTarget);
dragController.addDragListener(mDeleteDropTarget);
dragController.addDragListener(mUninstallDropTarget);
dragController.addDropTarget(mDeleteDropTarget);
dragController.addDropTarget(mUninstallDropTarget);
mDeleteDropTarget.setLauncher(launcher);
mUninstallDropTarget.setLauncher(launcher);
}
@Override
public void showDropTargets() {
animateToState(State.DROP_TARGET, DEFAULT_DRAG_FADE_DURATION);
}
@Override
public void hideDropTargets() {
animateToState(State.SEARCH_BAR, DEFAULT_DRAG_FADE_DURATION);
}
public void setQsbSearchBar(View qsb) {
mQSB = qsb;
}
/**
* Animates the current search bar state to a new state. If the {@param duration} is 0, then
* the state is applied immediately.
*/
public void animateToState(State newState, int duration) {
animateToState(newState, duration, null);
}
public void animateToState(State newState, int duration, AnimatorSet animation) {
if (mState != newState) {
mState = newState;
resetAnimation(duration);
if (duration > 0) {
animateAlpha(mDropTargetBar, mState.mDropTargetBarAlpha, DEFAULT_INTERPOLATOR);
} else {
mDropTargetBar.setAlpha(mState.mDropTargetBarAlpha);
AlphaUpdateListener.updateVisibility(mDropTargetBar, mAccessibilityEnabled);
}
if (mQSB != null) {
boolean isVertical = ((Launcher) getContext()).getDeviceProfile()
.isVerticalBarLayout();
float translation = isVertical ? 0 : mState.mTranslation * getMeasuredHeight();
if (duration > 0) {
int translationChange = Float.compare(mQSB.getTranslationY(), translation);
animateAlpha(mQSB, mState.mSearchBarAlpha,
translationChange == 0 ? DEFAULT_INTERPOLATOR
: (translationChange < 0 ? MOVE_DOWN_INTERPOLATOR
: MOVE_UP_INTERPOLATOR));
if (translationChange != 0) {
mCurrentAnimation.play(
ObjectAnimator.ofFloat(mQSB, View.TRANSLATION_Y, translation));
}
} else {
mQSB.setTranslationY(translation);
mQSB.setAlpha(mState.mSearchBarAlpha);
AlphaUpdateListener.updateVisibility(mQSB, mAccessibilityEnabled);
}
}
// Start the final animation
if (duration > 0) {
if (animation != null) {
animation.play(mCurrentAnimation);
} else {
mCurrentAnimation.start();
}
}
}
}
/**
* @return the bounds of the QSB search bar.
*/
public Rect getSearchBarBounds() {
if (mQSB != null) {
final int[] pos = new int[2];
mQSB.getLocationOnScreen(pos);
final Rect rect = new Rect();
rect.left = pos[0];
rect.top = pos[1];
rect.right = pos[0] + mQSB.getWidth();
rect.bottom = pos[1] + mQSB.getHeight();
return rect;
} else {
return null;
}
}
@Override
public void enableAccessibleDrag(boolean enable) {
if (mQSB != null) {
mQSB.setVisibility(enable ? View.GONE : View.VISIBLE);
}
mDeleteDropTarget.enableAccessibleDrag(enable);
mUninstallDropTarget.enableAccessibleDrag(enable);
}
}
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