288 lines
9.7 KiB
Java
288 lines
9.7 KiB
Java
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.support.v7.internal.widget;
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import android.content.Context;
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import android.content.res.Configuration;
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import android.content.res.TypedArray;
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import android.os.Build;
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import android.support.v4.view.ViewCompat;
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import android.support.v4.view.ViewPropertyAnimatorCompat;
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import android.support.v4.view.ViewPropertyAnimatorListener;
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import android.support.v7.appcompat.R;
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import android.support.v7.internal.view.ViewPropertyAnimatorCompatSet;
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import android.support.v7.widget.ActionMenuPresenter;
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import android.support.v7.widget.ActionMenuView;
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import android.util.AttributeSet;
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import android.util.TypedValue;
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import android.view.ContextThemeWrapper;
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import android.view.View;
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import android.view.ViewGroup;
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import android.view.animation.DecelerateInterpolator;
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import android.view.animation.Interpolator;
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abstract class AbsActionBarView extends ViewGroup {
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private static final Interpolator sAlphaInterpolator = new DecelerateInterpolator();
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private static final int FADE_DURATION = 200;
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protected final VisibilityAnimListener mVisAnimListener = new VisibilityAnimListener();
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/** Context against which to inflate popup menus. */
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protected final Context mPopupContext;
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protected ActionMenuView mMenuView;
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protected ActionMenuPresenter mActionMenuPresenter;
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protected ViewGroup mSplitView;
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protected boolean mSplitActionBar;
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protected boolean mSplitWhenNarrow;
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protected int mContentHeight;
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protected ViewPropertyAnimatorCompat mVisibilityAnim;
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AbsActionBarView(Context context) {
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this(context, null);
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}
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AbsActionBarView(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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AbsActionBarView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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final TypedValue tv = new TypedValue();
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if (context.getTheme().resolveAttribute(R.attr.actionBarPopupTheme, tv, true)
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&& tv.resourceId != 0) {
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mPopupContext = new ContextThemeWrapper(context, tv.resourceId);
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} else {
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mPopupContext = context;
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}
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}
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@Override
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protected void onConfigurationChanged(Configuration newConfig) {
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if (Build.VERSION.SDK_INT >= 8) {
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super.onConfigurationChanged(newConfig);
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}
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// Action bar can change size on configuration changes.
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// Reread the desired height from the theme-specified style.
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TypedArray a = getContext().obtainStyledAttributes(null, R.styleable.ActionBar,
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R.attr.actionBarStyle, 0);
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setContentHeight(a.getLayoutDimension(R.styleable.ActionBar_height, 0));
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a.recycle();
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if (mActionMenuPresenter != null) {
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mActionMenuPresenter.onConfigurationChanged(newConfig);
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}
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}
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/**
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* Sets whether the bar should be split right now, no questions asked.
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* @param split true if the bar should split
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*/
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public void setSplitToolbar(boolean split) {
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mSplitActionBar = split;
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}
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/**
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* Sets whether the bar should split if we enter a narrow screen configuration.
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* @param splitWhenNarrow true if the bar should check to split after a config change
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*/
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public void setSplitWhenNarrow(boolean splitWhenNarrow) {
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mSplitWhenNarrow = splitWhenNarrow;
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}
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public void setContentHeight(int height) {
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mContentHeight = height;
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requestLayout();
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}
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public int getContentHeight() {
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return mContentHeight;
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}
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public void setSplitView(ViewGroup splitView) {
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mSplitView = splitView;
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}
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/**
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* @return Current visibility or if animating, the visibility being animated to.
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*/
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public int getAnimatedVisibility() {
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if (mVisibilityAnim != null) {
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return mVisAnimListener.mFinalVisibility;
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}
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return getVisibility();
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}
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public void animateToVisibility(int visibility) {
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if (mVisibilityAnim != null) {
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mVisibilityAnim.cancel();
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}
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if (visibility == VISIBLE) {
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if (getVisibility() != VISIBLE) {
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ViewCompat.setAlpha(this, 0f);
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if (mSplitView != null && mMenuView != null) {
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ViewCompat.setAlpha(mMenuView, 0f);
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}
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}
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ViewPropertyAnimatorCompat anim = ViewCompat.animate(this).alpha(1f);
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anim.setDuration(FADE_DURATION);
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anim.setInterpolator(sAlphaInterpolator);
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if (mSplitView != null && mMenuView != null) {
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ViewPropertyAnimatorCompatSet set = new ViewPropertyAnimatorCompatSet();
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ViewPropertyAnimatorCompat splitAnim = ViewCompat.animate(mMenuView).alpha(1f);
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splitAnim.setDuration(FADE_DURATION);
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set.setListener(mVisAnimListener.withFinalVisibility(anim, visibility));
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set.play(anim).play(splitAnim);
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set.start();
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} else {
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anim.setListener(mVisAnimListener.withFinalVisibility(anim, visibility));
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anim.start();
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}
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} else {
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ViewPropertyAnimatorCompat anim = ViewCompat.animate(this).alpha(0f);
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anim.setDuration(FADE_DURATION);
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anim.setInterpolator(sAlphaInterpolator);
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if (mSplitView != null && mMenuView != null) {
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ViewPropertyAnimatorCompatSet set = new ViewPropertyAnimatorCompatSet();
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ViewPropertyAnimatorCompat splitAnim = ViewCompat.animate(mMenuView).alpha(0f);
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splitAnim.setDuration(FADE_DURATION);
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set.setListener(mVisAnimListener.withFinalVisibility(anim, visibility));
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set.play(anim).play(splitAnim);
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set.start();
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} else {
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anim.setListener(mVisAnimListener.withFinalVisibility(anim, visibility));
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anim.start();
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}
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}
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}
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public boolean showOverflowMenu() {
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if (mActionMenuPresenter != null) {
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return mActionMenuPresenter.showOverflowMenu();
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}
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return false;
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}
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public void postShowOverflowMenu() {
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post(new Runnable() {
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public void run() {
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showOverflowMenu();
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}
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});
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}
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public boolean hideOverflowMenu() {
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if (mActionMenuPresenter != null) {
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return mActionMenuPresenter.hideOverflowMenu();
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}
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return false;
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}
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public boolean isOverflowMenuShowing() {
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if (mActionMenuPresenter != null) {
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return mActionMenuPresenter.isOverflowMenuShowing();
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}
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return false;
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}
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public boolean isOverflowMenuShowPending() {
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if (mActionMenuPresenter != null) {
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return mActionMenuPresenter.isOverflowMenuShowPending();
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}
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return false;
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}
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public boolean isOverflowReserved() {
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return mActionMenuPresenter != null && mActionMenuPresenter.isOverflowReserved();
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}
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public boolean canShowOverflowMenu() {
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return isOverflowReserved() && getVisibility() == VISIBLE;
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}
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public void dismissPopupMenus() {
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if (mActionMenuPresenter != null) {
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mActionMenuPresenter.dismissPopupMenus();
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}
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}
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protected int measureChildView(View child, int availableWidth, int childSpecHeight,
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int spacing) {
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child.measure(MeasureSpec.makeMeasureSpec(availableWidth, MeasureSpec.AT_MOST),
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childSpecHeight);
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availableWidth -= child.getMeasuredWidth();
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availableWidth -= spacing;
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return Math.max(0, availableWidth);
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}
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static protected int next(int x, int val, boolean isRtl) {
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return isRtl ? x - val : x + val;
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}
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protected int positionChild(View child, int x, int y, int contentHeight, boolean reverse) {
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int childWidth = child.getMeasuredWidth();
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int childHeight = child.getMeasuredHeight();
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int childTop = y + (contentHeight - childHeight) / 2;
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if (reverse) {
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child.layout(x - childWidth, childTop, x, childTop + childHeight);
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} else {
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child.layout(x, childTop, x + childWidth, childTop + childHeight);
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}
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return (reverse ? -childWidth : childWidth);
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}
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protected class VisibilityAnimListener implements ViewPropertyAnimatorListener {
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private boolean mCanceled = false;
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int mFinalVisibility;
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public VisibilityAnimListener withFinalVisibility(ViewPropertyAnimatorCompat animation,
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int visibility) {
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mVisibilityAnim = animation;
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mFinalVisibility = visibility;
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return this;
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}
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@Override
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public void onAnimationStart(View view) {
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setVisibility(VISIBLE);
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mCanceled = false;
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}
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@Override
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public void onAnimationEnd(View view) {
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if (mCanceled) return;
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mVisibilityAnim = null;
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setVisibility(mFinalVisibility);
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if (mSplitView != null && mMenuView != null) {
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mMenuView.setVisibility(mFinalVisibility);
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}
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}
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@Override
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public void onAnimationCancel(View view) {
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mCanceled = true;
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}
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}
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}
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