/*
* Copyright (C) 2010 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.graphics.drawable.Drawable;
import android.os.Build;
import android.support.v7.appcompat.R;
import android.support.v7.internal.view.menu.MenuBuilder;
import android.support.v7.view.ActionMode;
import android.support.v7.widget.ActionMenuPresenter;
import android.support.v7.widget.ActionMenuView;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.accessibility.AccessibilityEvent;
import android.widget.LinearLayout;
import android.widget.TextView;
/**
* @hide
*/
public class ActionBarContextView extends AbsActionBarView {
private static final String TAG = "ActionBarContextView";
private CharSequence mTitle;
private CharSequence mSubtitle;
private View mClose;
private View mCustomView;
private LinearLayout mTitleLayout;
private TextView mTitleView;
private TextView mSubtitleView;
private int mTitleStyleRes;
private int mSubtitleStyleRes;
private boolean mTitleOptional;
private int mCloseItemLayout;
public ActionBarContextView(Context context) {
this(context, null);
}
public ActionBarContextView(Context context, AttributeSet attrs) {
this(context, attrs, R.attr.actionModeStyle);
}
public ActionBarContextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
final TintTypedArray a = TintTypedArray.obtainStyledAttributes(context, attrs,
R.styleable.ActionMode, defStyle, 0);
setBackgroundDrawable(a.getDrawable(
R.styleable.ActionMode_background));
mTitleStyleRes = a.getResourceId(
R.styleable.ActionMode_titleTextStyle, 0);
mSubtitleStyleRes = a.getResourceId(
R.styleable.ActionMode_subtitleTextStyle, 0);
mContentHeight = a.getLayoutDimension(
R.styleable.ActionMode_height, 0);
mCloseItemLayout = a.getResourceId(
R.styleable.ActionMode_closeItemLayout,
R.layout.abc_action_mode_close_item_material);
a.recycle();
}
@Override
public void onDetachedFromWindow() {
super.onDetachedFromWindow();
if (mActionMenuPresenter != null) {
mActionMenuPresenter.hideOverflowMenu();
mActionMenuPresenter.hideSubMenus();
}
}
public void setContentHeight(int height) {
mContentHeight = height;
}
public void setCustomView(View view) {
if (mCustomView != null) {
removeView(mCustomView);
}
mCustomView = view;
if (view != null && mTitleLayout != null) {
removeView(mTitleLayout);
mTitleLayout = null;
}
if (view != null) {
addView(view);
}
requestLayout();
}
public void setTitle(CharSequence title) {
mTitle = title;
initTitle();
}
public void setSubtitle(CharSequence subtitle) {
mSubtitle = subtitle;
initTitle();
}
public CharSequence getTitle() {
return mTitle;
}
public CharSequence getSubtitle() {
return mSubtitle;
}
private void initTitle() {
if (mTitleLayout == null) {
LayoutInflater inflater = LayoutInflater.from(getContext());
inflater.inflate(R.layout.abc_action_bar_title_item, this);
mTitleLayout = (LinearLayout) getChildAt(getChildCount() - 1);
mTitleView = (TextView) mTitleLayout.findViewById(R.id.action_bar_title);
mSubtitleView = (TextView) mTitleLayout.findViewById(R.id.action_bar_subtitle);
if (mTitleStyleRes != 0) {
mTitleView.setTextAppearance(getContext(), mTitleStyleRes);
}
if (mSubtitleStyleRes != 0) {
mSubtitleView.setTextAppearance(getContext(), mSubtitleStyleRes);
}
}
mTitleView.setText(mTitle);
mSubtitleView.setText(mSubtitle);
final boolean hasTitle = !TextUtils.isEmpty(mTitle);
final boolean hasSubtitle = !TextUtils.isEmpty(mSubtitle);
mSubtitleView.setVisibility(hasSubtitle ? VISIBLE : GONE);
mTitleLayout.setVisibility(hasTitle || hasSubtitle ? VISIBLE : GONE);
if (mTitleLayout.getParent() == null) {
addView(mTitleLayout);
}
}
public void initForMode(final ActionMode mode) {
if (mClose == null) {
LayoutInflater inflater = LayoutInflater.from(getContext());
mClose = inflater.inflate(mCloseItemLayout, this, false);
addView(mClose);
} else if (mClose.getParent() == null) {
addView(mClose);
}
View closeButton = mClose.findViewById(R.id.action_mode_close_button);
closeButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
mode.finish();
}
});
final MenuBuilder menu = (MenuBuilder) mode.getMenu();
if (mActionMenuPresenter != null) {
mActionMenuPresenter.dismissPopupMenus();
}
mActionMenuPresenter = new ActionMenuPresenter(getContext());
mActionMenuPresenter.setReserveOverflow(true);
final LayoutParams layoutParams = new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.MATCH_PARENT);
menu.addMenuPresenter(mActionMenuPresenter, mPopupContext);
mMenuView = (ActionMenuView) mActionMenuPresenter.getMenuView(this);
mMenuView.setBackgroundDrawable(null);
addView(mMenuView, layoutParams);
}
public void closeMode() {
if (mClose == null) {
killMode();
return;
}
}
public void killMode() {
removeAllViews();
mCustomView = null;
mMenuView = null;
}
@Override
public boolean showOverflowMenu() {
if (mActionMenuPresenter != null) {
return mActionMenuPresenter.showOverflowMenu();
}
return false;
}
@Override
public boolean hideOverflowMenu() {
if (mActionMenuPresenter != null) {
return mActionMenuPresenter.hideOverflowMenu();
}
return false;
}
@Override
public boolean isOverflowMenuShowing() {
if (mActionMenuPresenter != null) {
return mActionMenuPresenter.isOverflowMenuShowing();
}
return false;
}
@Override
protected ViewGroup.LayoutParams generateDefaultLayoutParams() {
// Used by custom views if they don't supply layout params. Everything else
// added to an ActionBarContextView should have them already.
return new MarginLayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
}
@Override
public ViewGroup.LayoutParams generateLayoutParams(AttributeSet attrs) {
return new MarginLayoutParams(getContext(), attrs);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
if (widthMode != MeasureSpec.EXACTLY) {
throw new IllegalStateException(getClass().getSimpleName() + " can only be used " +
"with android:layout_width=\"match_parent\" (or fill_parent)");
}
final int heightMode = MeasureSpec.getMode(heightMeasureSpec);
if (heightMode == MeasureSpec.UNSPECIFIED) {
throw new IllegalStateException(getClass().getSimpleName() + " can only be used " +
"with android:layout_height=\"wrap_content\"");
}
final int contentWidth = MeasureSpec.getSize(widthMeasureSpec);
int maxHeight = mContentHeight > 0 ?
mContentHeight : MeasureSpec.getSize(heightMeasureSpec);
final int verticalPadding = getPaddingTop() + getPaddingBottom();
int availableWidth = contentWidth - getPaddingLeft() - getPaddingRight();
final int height = maxHeight - verticalPadding;
final int childSpecHeight = MeasureSpec.makeMeasureSpec(height, MeasureSpec.AT_MOST);
if (mClose != null) {
availableWidth = measureChildView(mClose, availableWidth, childSpecHeight, 0);
MarginLayoutParams lp = (MarginLayoutParams) mClose.getLayoutParams();
availableWidth -= lp.leftMargin + lp.rightMargin;
}
if (mMenuView != null && mMenuView.getParent() == this) {
availableWidth = measureChildView(mMenuView, availableWidth,
childSpecHeight, 0);
}
if (mTitleLayout != null && mCustomView == null) {
if (mTitleOptional) {
final int titleWidthSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
mTitleLayout.measure(titleWidthSpec, childSpecHeight);
final int titleWidth = mTitleLayout.getMeasuredWidth();
final boolean titleFits = titleWidth <= availableWidth;
if (titleFits) {
availableWidth -= titleWidth;
}
mTitleLayout.setVisibility(titleFits ? VISIBLE : GONE);
} else {
availableWidth = measureChildView(mTitleLayout, availableWidth, childSpecHeight, 0);
}
}
if (mCustomView != null) {
ViewGroup.LayoutParams lp = mCustomView.getLayoutParams();
final int customWidthMode = lp.width != LayoutParams.WRAP_CONTENT ?
MeasureSpec.EXACTLY : MeasureSpec.AT_MOST;
final int customWidth = lp.width >= 0 ?
Math.min(lp.width, availableWidth) : availableWidth;
final int customHeightMode = lp.height != LayoutParams.WRAP_CONTENT ?
MeasureSpec.EXACTLY : MeasureSpec.AT_MOST;
final int customHeight = lp.height >= 0 ?
Math.min(lp.height, height) : height;
mCustomView.measure(MeasureSpec.makeMeasureSpec(customWidth, customWidthMode),
MeasureSpec.makeMeasureSpec(customHeight, customHeightMode));
}
if (mContentHeight <= 0) {
int measuredHeight = 0;
final int count = getChildCount();
for (int i = 0; i < count; i++) {
View v = getChildAt(i);
int paddedViewHeight = v.getMeasuredHeight() + verticalPadding;
if (paddedViewHeight > measuredHeight) {
measuredHeight = paddedViewHeight;
}
}
setMeasuredDimension(contentWidth, measuredHeight);
} else {
setMeasuredDimension(contentWidth, maxHeight);
}
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
final boolean isLayoutRtl = ViewUtils.isLayoutRtl(this);
int x = isLayoutRtl ? r - l - getPaddingRight() : getPaddingLeft();
final int y = getPaddingTop();
final int contentHeight = b - t - getPaddingTop() - getPaddingBottom();
if (mClose != null && mClose.getVisibility() != GONE) {
MarginLayoutParams lp = (MarginLayoutParams) mClose.getLayoutParams();
final int startMargin = (isLayoutRtl ? lp.rightMargin : lp.leftMargin);
final int endMargin = (isLayoutRtl ? lp.leftMargin : lp.rightMargin);
x = next(x, startMargin, isLayoutRtl);
x += positionChild(mClose, x, y, contentHeight, isLayoutRtl);
x = next(x, endMargin, isLayoutRtl);
}
if (mTitleLayout != null && mCustomView == null && mTitleLayout.getVisibility() != GONE) {
x += positionChild(mTitleLayout, x, y, contentHeight, isLayoutRtl);
}
if (mCustomView != null) {
x += positionChild(mCustomView, x, y, contentHeight, isLayoutRtl);
}
x = isLayoutRtl ? getPaddingLeft() : r - l - getPaddingRight();
if (mMenuView != null) {
x += positionChild(mMenuView, x, y, contentHeight, !isLayoutRtl);
}
}
@Override
public boolean shouldDelayChildPressedState() {
return false;
}
@Override
public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
if (Build.VERSION.SDK_INT >= 14) {
if (event.getEventType() == AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED) {
// Action mode started
event.setSource(this);
event.setClassName(getClass().getName());
event.setPackageName(getContext().getPackageName());
event.setContentDescription(mTitle);
} else {
super.onInitializeAccessibilityEvent(event);
}
}
}
public void setTitleOptional(boolean titleOptional) {
if (titleOptional != mTitleOptional) {
requestLayout();
}
mTitleOptional = titleOptional;
}
public boolean isTitleOptional() {
return mTitleOptional;
}
}