296 lines
9.6 KiB
Java
296 lines
9.6 KiB
Java
/*
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* Copyright (C) 2010 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 com.actionbarsherlock.internal.view.menu;
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import java.util.HashSet;
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import java.util.Set;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.graphics.Rect;
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import android.graphics.drawable.Drawable;
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import android.os.Build;
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import android.text.TextUtils;
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import android.util.AttributeSet;
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import android.view.Gravity;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.accessibility.AccessibilityEvent;
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import android.widget.ImageButton;
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import android.widget.LinearLayout;
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import android.widget.Toast;
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import com.actionbarsherlock.R;
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import com.actionbarsherlock.internal.view.View_HasStateListenerSupport;
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import com.actionbarsherlock.internal.view.View_OnAttachStateChangeListener;
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import com.actionbarsherlock.internal.widget.CapitalizingButton;
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import static com.actionbarsherlock.internal.ResourcesCompat.getResources_getBoolean;
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/**
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* @hide
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*/
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public class ActionMenuItemView extends LinearLayout
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implements MenuView.ItemView, View.OnClickListener, View.OnLongClickListener,
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ActionMenuView.ActionMenuChildView, View_HasStateListenerSupport {
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//UNUSED private static final String TAG = "ActionMenuItemView";
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private MenuItemImpl mItemData;
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private CharSequence mTitle;
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private MenuBuilder.ItemInvoker mItemInvoker;
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private ImageButton mImageButton;
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private CapitalizingButton mTextButton;
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private boolean mAllowTextWithIcon;
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private boolean mExpandedFormat;
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private int mMinWidth;
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private final Set<View_OnAttachStateChangeListener> mListeners = new HashSet<View_OnAttachStateChangeListener>();
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public ActionMenuItemView(Context context) {
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this(context, null);
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}
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public ActionMenuItemView(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public ActionMenuItemView(Context context, AttributeSet attrs, int defStyle) {
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//TODO super(context, attrs, defStyle);
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super(context, attrs);
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mAllowTextWithIcon = getResources_getBoolean(context,
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R.bool.abs__config_allowActionMenuItemTextWithIcon);
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TypedArray a = context.obtainStyledAttributes(attrs,
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R.styleable.SherlockActionMenuItemView, 0, 0);
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mMinWidth = a.getDimensionPixelSize(
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R.styleable.SherlockActionMenuItemView_android_minWidth, 0);
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a.recycle();
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}
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@Override
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public void addOnAttachStateChangeListener(View_OnAttachStateChangeListener listener) {
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mListeners.add(listener);
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}
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@Override
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public void removeOnAttachStateChangeListener(View_OnAttachStateChangeListener listener) {
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mListeners.remove(listener);
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}
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@Override
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protected void onAttachedToWindow() {
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super.onAttachedToWindow();
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for (View_OnAttachStateChangeListener listener : mListeners) {
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listener.onViewAttachedToWindow(this);
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}
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}
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@Override
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protected void onDetachedFromWindow() {
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super.onDetachedFromWindow();
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for (View_OnAttachStateChangeListener listener : mListeners) {
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listener.onViewDetachedFromWindow(this);
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}
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}
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@Override
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public void onFinishInflate() {
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mImageButton = (ImageButton) findViewById(R.id.abs__imageButton);
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mTextButton = (CapitalizingButton) findViewById(R.id.abs__textButton);
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mImageButton.setOnClickListener(this);
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mTextButton.setOnClickListener(this);
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mImageButton.setOnLongClickListener(this);
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setOnClickListener(this);
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setOnLongClickListener(this);
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}
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public MenuItemImpl getItemData() {
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return mItemData;
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}
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public void initialize(MenuItemImpl itemData, int menuType) {
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mItemData = itemData;
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setIcon(itemData.getIcon());
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setTitle(itemData.getTitleForItemView(this)); // Title only takes effect if there is no icon
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setId(itemData.getItemId());
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setVisibility(itemData.isVisible() ? View.VISIBLE : View.GONE);
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setEnabled(itemData.isEnabled());
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}
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@Override
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public void setEnabled(boolean enabled) {
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super.setEnabled(enabled);
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mImageButton.setEnabled(enabled);
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mTextButton.setEnabled(enabled);
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}
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public void onClick(View v) {
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if (mItemInvoker != null) {
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mItemInvoker.invokeItem(mItemData);
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}
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}
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public void setItemInvoker(MenuBuilder.ItemInvoker invoker) {
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mItemInvoker = invoker;
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}
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public boolean prefersCondensedTitle() {
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return true;
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}
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public void setCheckable(boolean checkable) {
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// TODO Support checkable action items
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}
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public void setChecked(boolean checked) {
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// TODO Support checkable action items
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}
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public void setExpandedFormat(boolean expandedFormat) {
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if (mExpandedFormat != expandedFormat) {
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mExpandedFormat = expandedFormat;
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if (mItemData != null) {
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mItemData.actionFormatChanged();
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}
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}
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}
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private void updateTextButtonVisibility() {
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boolean visible = !TextUtils.isEmpty(mTextButton.getText());
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visible &= mImageButton.getDrawable() == null ||
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(mItemData.showsTextAsAction() && (mAllowTextWithIcon || mExpandedFormat));
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mTextButton.setVisibility(visible ? VISIBLE : GONE);
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}
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public void setIcon(Drawable icon) {
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mImageButton.setImageDrawable(icon);
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if (icon != null) {
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mImageButton.setVisibility(VISIBLE);
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} else {
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mImageButton.setVisibility(GONE);
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}
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updateTextButtonVisibility();
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}
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public boolean hasText() {
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return mTextButton.getVisibility() != GONE;
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}
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public void setShortcut(boolean showShortcut, char shortcutKey) {
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// Action buttons don't show text for shortcut keys.
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}
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public void setTitle(CharSequence title) {
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mTitle = title;
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mTextButton.setTextCompat(mTitle);
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setContentDescription(mTitle);
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updateTextButtonVisibility();
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}
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@Override
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public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
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onPopulateAccessibilityEvent(event);
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return true;
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}
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@Override
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public void onPopulateAccessibilityEvent(AccessibilityEvent event) {
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
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super.onPopulateAccessibilityEvent(event);
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}
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final CharSequence cdesc = getContentDescription();
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if (!TextUtils.isEmpty(cdesc)) {
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event.getText().add(cdesc);
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}
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}
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@Override
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public boolean dispatchHoverEvent(MotionEvent event) {
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// Don't allow children to hover; we want this to be treated as a single component.
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
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return onHoverEvent(event);
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}
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return false;
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}
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public boolean showsIcon() {
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return true;
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}
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public boolean needsDividerBefore() {
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return hasText() && mItemData.getIcon() == null;
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}
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public boolean needsDividerAfter() {
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return hasText();
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}
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@Override
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public boolean onLongClick(View v) {
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if (hasText()) {
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// Don't show the cheat sheet for items that already show text.
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return false;
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}
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final int[] screenPos = new int[2];
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final Rect displayFrame = new Rect();
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getLocationOnScreen(screenPos);
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getWindowVisibleDisplayFrame(displayFrame);
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final Context context = getContext();
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final int width = getWidth();
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final int height = getHeight();
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final int midy = screenPos[1] + height / 2;
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final int screenWidth = context.getResources().getDisplayMetrics().widthPixels;
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Toast cheatSheet = Toast.makeText(context, mItemData.getTitle(), Toast.LENGTH_SHORT);
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if (midy < displayFrame.height()) {
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// Show along the top; follow action buttons
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cheatSheet.setGravity(Gravity.TOP | Gravity.RIGHT,
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screenWidth - screenPos[0] - width / 2, height);
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} else {
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// Show along the bottom center
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cheatSheet.setGravity(Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, height);
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}
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cheatSheet.show();
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return true;
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
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final int specSize = MeasureSpec.getSize(widthMeasureSpec);
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final int oldMeasuredWidth = getMeasuredWidth();
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final int targetWidth = widthMode == MeasureSpec.AT_MOST ? Math.min(specSize, mMinWidth)
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: mMinWidth;
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if (widthMode != MeasureSpec.EXACTLY && mMinWidth > 0 && oldMeasuredWidth < targetWidth) {
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// Remeasure at exactly the minimum width.
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super.onMeasure(MeasureSpec.makeMeasureSpec(targetWidth, MeasureSpec.EXACTLY),
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heightMeasureSpec);
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}
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}
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}
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