/*
* 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 android.support.v7.internal.widget;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.os.Build;
import android.support.v4.view.ViewCompat;
import android.support.v4.view.ViewPropertyAnimatorCompat;
import android.support.v4.view.ViewPropertyAnimatorListener;
import android.support.v7.appcompat.R;
import android.support.v7.internal.view.ViewPropertyAnimatorCompatSet;
import android.support.v7.widget.ActionMenuPresenter;
import android.support.v7.widget.ActionMenuView;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.ContextThemeWrapper;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
abstract class AbsActionBarView extends ViewGroup {
private static final Interpolator sAlphaInterpolator = new DecelerateInterpolator();
private static final int FADE_DURATION = 200;
protected final VisibilityAnimListener mVisAnimListener = new VisibilityAnimListener();
/** Context against which to inflate popup menus. */
protected final Context mPopupContext;
protected ActionMenuView mMenuView;
protected ActionMenuPresenter mActionMenuPresenter;
protected ViewGroup mSplitView;
protected boolean mSplitActionBar;
protected boolean mSplitWhenNarrow;
protected int mContentHeight;
protected ViewPropertyAnimatorCompat mVisibilityAnim;
AbsActionBarView(Context context) {
this(context, null);
}
AbsActionBarView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
AbsActionBarView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
final TypedValue tv = new TypedValue();
if (context.getTheme().resolveAttribute(R.attr.actionBarPopupTheme, tv, true)
&& tv.resourceId != 0) {
mPopupContext = new ContextThemeWrapper(context, tv.resourceId);
} else {
mPopupContext = context;
}
}
@Override
protected void onConfigurationChanged(Configuration newConfig) {
if (Build.VERSION.SDK_INT >= 8) {
super.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.ActionBar,
R.attr.actionBarStyle, 0);
setContentHeight(a.getLayoutDimension(R.styleable.ActionBar_height, 0));
a.recycle();
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 setSplitToolbar(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(ViewGroup 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) {
ViewCompat.setAlpha(this, 0f);
if (mSplitView != null && mMenuView != null) {
ViewCompat.setAlpha(mMenuView, 0f);
}
}
ViewPropertyAnimatorCompat anim = ViewCompat.animate(this).alpha(1f);
anim.setDuration(FADE_DURATION);
anim.setInterpolator(sAlphaInterpolator);
if (mSplitView != null && mMenuView != null) {
ViewPropertyAnimatorCompatSet set = new ViewPropertyAnimatorCompatSet();
ViewPropertyAnimatorCompat splitAnim = ViewCompat.animate(mMenuView).alpha(1f);
splitAnim.setDuration(FADE_DURATION);
set.setListener(mVisAnimListener.withFinalVisibility(anim, visibility));
set.play(anim).play(splitAnim);
set.start();
} else {
anim.setListener(mVisAnimListener.withFinalVisibility(anim, visibility));
anim.start();
}
} else {
ViewPropertyAnimatorCompat anim = ViewCompat.animate(this).alpha(0f);
anim.setDuration(FADE_DURATION);
anim.setInterpolator(sAlphaInterpolator);
if (mSplitView != null && mMenuView != null) {
ViewPropertyAnimatorCompatSet set = new ViewPropertyAnimatorCompatSet();
ViewPropertyAnimatorCompat splitAnim = ViewCompat.animate(mMenuView).alpha(0f);
splitAnim.setDuration(FADE_DURATION);
set.setListener(mVisAnimListener.withFinalVisibility(anim, visibility));
set.play(anim).play(splitAnim);
set.start();
} else {
anim.setListener(mVisAnimListener.withFinalVisibility(anim, visibility));
anim.start();
}
}
}
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 isOverflowMenuShowPending() {
if (mActionMenuPresenter != null) {
return mActionMenuPresenter.isOverflowMenuShowPending();
}
return false;
}
public boolean isOverflowReserved() {
return mActionMenuPresenter != null && mActionMenuPresenter.isOverflowReserved();
}
public boolean canShowOverflowMenu() {
return isOverflowReserved() && getVisibility() == VISIBLE;
}
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);
}
static protected int next(int x, int val, boolean isRtl) {
return isRtl ? x - val : x + val;
}
protected int positionChild(View child, int x, int y, int contentHeight, boolean reverse) {
int childWidth = child.getMeasuredWidth();
int childHeight = child.getMeasuredHeight();
int childTop = y + (contentHeight - childHeight) / 2;
if (reverse) {
child.layout(x - childWidth, childTop, x, childTop + childHeight);
} else {
child.layout(x, childTop, x + childWidth, childTop + childHeight);
}
return (reverse ? -childWidth : childWidth);
}
protected class VisibilityAnimListener implements ViewPropertyAnimatorListener {
private boolean mCanceled = false;
int mFinalVisibility;
public VisibilityAnimListener withFinalVisibility(ViewPropertyAnimatorCompat animation,
int visibility) {
mVisibilityAnim = animation;
mFinalVisibility = visibility;
return this;
}
@Override
public void onAnimationStart(View view) {
setVisibility(VISIBLE);
mCanceled = false;
}
@Override
public void onAnimationEnd(View view) {
if (mCanceled) return;
mVisibilityAnim = null;
setVisibility(mFinalVisibility);
if (mSplitView != null && mMenuView != null) {
mMenuView.setVisibility(mFinalVisibility);
}
}
@Override
public void onAnimationCancel(View view) {
mCanceled = true;
}
}
}
|
