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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.actionbarsherlock.internal.widget;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.os.Build;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import com.actionbarsherlock.R;
import com.actionbarsherlock.internal.nineoldandroids.animation.Animator;
import com.actionbarsherlock.internal.nineoldandroids.animation.AnimatorSet;
import com.actionbarsherlock.internal.nineoldandroids.animation.ObjectAnimator;
import com.actionbarsherlock.internal.nineoldandroids.view.NineViewGroup;
import com.actionbarsherlock.internal.view.menu.ActionMenuPresenter;
import com.actionbarsherlock.internal.view.menu.ActionMenuView;
import static com.actionbarsherlock.internal.ResourcesCompat.getResources_getBoolean;
public abstract class AbsActionBarView extends NineViewGroup {
protected ActionMenuView mMenuView;
protected ActionMenuPresenter mActionMenuPresenter;
protected ActionBarContainer mSplitView;
protected boolean mSplitActionBar;
protected boolean mSplitWhenNarrow;
protected int mContentHeight;
final Context mContext;
protected Animator mVisibilityAnim;
protected final VisibilityAnimListener mVisAnimListener = new VisibilityAnimListener();
private static final /*Time*/Interpolator sAlphaInterpolator = new DecelerateInterpolator();
private static final int FADE_DURATION = 200;
public AbsActionBarView(Context context) {
super(context);
mContext = context;
}
public AbsActionBarView(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
}
public AbsActionBarView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mContext = context;
}
/*
* Must be public so we can dispatch pre-2.2 via ActionBarImpl.
*/
@Override
public void onConfigurationChanged(Configuration newConfig) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) {
super.onConfigurationChanged(newConfig);
} else if (mMenuView != null) {
mMenuView.onConfigurationChanged(newConfig);
}
// Action bar can change size on configuration changes.
// Reread the desired height from the theme-specified style.
TypedArray a = getContext().obtainStyledAttributes(null, R.styleable.SherlockActionBar,
R.attr.actionBarStyle, 0);
setContentHeight(a.getLayoutDimension(R.styleable.SherlockActionBar_height, 0));
a.recycle();
if (mSplitWhenNarrow) {
setSplitActionBar(getResources_getBoolean(getContext(),
R.bool.abs__split_action_bar_is_narrow));
}
if (mActionMenuPresenter != null) {
mActionMenuPresenter.onConfigurationChanged(newConfig);
}
}
/**
* Sets whether the bar should be split right now, no questions asked.
* @param split true if the bar should split
*/
public void setSplitActionBar(boolean split) {
mSplitActionBar = split;
}
/**
* Sets whether the bar should split if we enter a narrow screen configuration.
* @param splitWhenNarrow true if the bar should check to split after a config change
*/
public void setSplitWhenNarrow(boolean splitWhenNarrow) {
mSplitWhenNarrow = splitWhenNarrow;
}
public void setContentHeight(int height) {
mContentHeight = height;
requestLayout();
}
public int getContentHeight() {
return mContentHeight;
}
public void setSplitView(ActionBarContainer splitView) {
mSplitView = splitView;
}
/**
* @return Current visibility or if animating, the visibility being animated to.
*/
public int getAnimatedVisibility() {
if (mVisibilityAnim != null) {
return mVisAnimListener.mFinalVisibility;
}
return getVisibility();
}
public void animateToVisibility(int visibility) {
if (mVisibilityAnim != null) {
mVisibilityAnim.cancel();
}
if (visibility == VISIBLE) {
if (getVisibility() != VISIBLE) {
setAlpha(0);
if (mSplitView != null && mMenuView != null) {
mMenuView.setAlpha(0);
}
}
ObjectAnimator anim = ObjectAnimator.ofFloat(this, "alpha", 1);
anim.setDuration(FADE_DURATION);
anim.setInterpolator(sAlphaInterpolator);
if (mSplitView != null && mMenuView != null) {
AnimatorSet set = new AnimatorSet();
ObjectAnimator splitAnim = ObjectAnimator.ofFloat(mMenuView, "alpha", 1);
splitAnim.setDuration(FADE_DURATION);
set.addListener(mVisAnimListener.withFinalVisibility(visibility));
set.play(anim).with(splitAnim);
set.start();
} else {
anim.addListener(mVisAnimListener.withFinalVisibility(visibility));
anim.start();
}
} else {
ObjectAnimator anim = ObjectAnimator.ofFloat(this, "alpha", 0);
anim.setDuration(FADE_DURATION);
anim.setInterpolator(sAlphaInterpolator);
if (mSplitView != null && mMenuView != null) {
AnimatorSet set = new AnimatorSet();
ObjectAnimator splitAnim = ObjectAnimator.ofFloat(mMenuView, "alpha", 0);
splitAnim.setDuration(FADE_DURATION);
set.addListener(mVisAnimListener.withFinalVisibility(visibility));
set.play(anim).with(splitAnim);
set.start();
} else {
anim.addListener(mVisAnimListener.withFinalVisibility(visibility));
anim.start();
}
}
}
@Override
public void setVisibility(int visibility) {
if (mVisibilityAnim != null) {
mVisibilityAnim.end();
}
super.setVisibility(visibility);
}
public boolean showOverflowMenu() {
if (mActionMenuPresenter != null) {
return mActionMenuPresenter.showOverflowMenu();
}
return false;
}
public void postShowOverflowMenu() {
post(new Runnable() {
public void run() {
showOverflowMenu();
}
});
}
public boolean hideOverflowMenu() {
if (mActionMenuPresenter != null) {
return mActionMenuPresenter.hideOverflowMenu();
}
return false;
}
public boolean isOverflowMenuShowing() {
if (mActionMenuPresenter != null) {
return mActionMenuPresenter.isOverflowMenuShowing();
}
return false;
}
public boolean isOverflowReserved() {
return mActionMenuPresenter != null && mActionMenuPresenter.isOverflowReserved();
}
public void dismissPopupMenus() {
if (mActionMenuPresenter != null) {
mActionMenuPresenter.dismissPopupMenus();
}
}
protected int measureChildView(View child, int availableWidth, int childSpecHeight,
int spacing) {
child.measure(MeasureSpec.makeMeasureSpec(availableWidth, MeasureSpec.AT_MOST),
childSpecHeight);
availableWidth -= child.getMeasuredWidth();
availableWidth -= spacing;
return Math.max(0, availableWidth);
}
protected int positionChild(View child, int x, int y, int contentHeight) {
int childWidth = child.getMeasuredWidth();
int childHeight = child.getMeasuredHeight();
int childTop = y + (contentHeight - childHeight) / 2;
child.layout(x, childTop, x + childWidth, childTop + childHeight);
return childWidth;
}
protected int positionChildInverse(View child, int x, int y, int contentHeight) {
int childWidth = child.getMeasuredWidth();
int childHeight = child.getMeasuredHeight();
int childTop = y + (contentHeight - childHeight) / 2;
child.layout(x - childWidth, childTop, x, childTop + childHeight);
return childWidth;
}
protected class VisibilityAnimListener implements Animator.AnimatorListener {
private boolean mCanceled = false;
int mFinalVisibility;
public VisibilityAnimListener withFinalVisibility(int visibility) {
mFinalVisibility = visibility;
return this;
}
@Override
public void onAnimationStart(Animator animation) {
setVisibility(VISIBLE);
mVisibilityAnim = animation;
mCanceled = false;
}
@Override
public void onAnimationEnd(Animator animation) {
if (mCanceled) return;
mVisibilityAnim = null;
setVisibility(mFinalVisibility);
if (mSplitView != null && mMenuView != null) {
mMenuView.setVisibility(mFinalVisibility);
}
}
@Override
public void onAnimationCancel(Animator animation) {
mCanceled = true;
}
@Override
public void onAnimationRepeat(Animator animation) {
}
}
}
