michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko;
michael@0: 
michael@0: import org.mozilla.gecko.animation.AnimationUtils;
michael@0: import org.mozilla.gecko.menu.GeckoMenu;
michael@0: import org.mozilla.gecko.widget.GeckoPopupMenu;
michael@0: 
michael@0: import android.content.Context;
michael@0: import android.util.AttributeSet;
michael@0: import android.view.LayoutInflater;
michael@0: import android.view.Menu;
michael@0: import android.view.View;
michael@0: import android.view.ViewGroup;
michael@0: import android.view.animation.Animation;
michael@0: import android.view.animation.ScaleAnimation;
michael@0: import android.view.animation.TranslateAnimation;
michael@0: import android.widget.Button;
michael@0: import android.widget.ImageButton;
michael@0: import android.widget.LinearLayout;
michael@0: 
michael@0: class ActionModeCompatView extends LinearLayout implements GeckoMenu.ActionItemBarPresenter {
michael@0:     private final String LOGTAG = "GeckoActionModeCompatPresenter";
michael@0: 
michael@0:     private static final int SPEC = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
michael@0: 
michael@0:     private Button mTitleView;
michael@0:     private ImageButton mMenuButton;
michael@0:     private ViewGroup mActionButtonBar;
michael@0:     private GeckoPopupMenu mPopupMenu;
michael@0: 
michael@0:     // Maximum number of items to show as actions
michael@0:     private static final int MAX_ACTION_ITEMS = 4;
michael@0: 
michael@0:     private int mActionButtonsWidth = 0;
michael@0: 
michael@0:     public ActionModeCompatView(Context context) {
michael@0:         super(context);
michael@0:         init(context);
michael@0:     }
michael@0: 
michael@0:     public ActionModeCompatView(Context context, AttributeSet attrs) {
michael@0:         super(context, attrs);
michael@0:         init(context);
michael@0:     }
michael@0: 
michael@0:     public ActionModeCompatView(Context context, AttributeSet attrs, int style) {
michael@0:         super(context, attrs, style);
michael@0:         init(context);
michael@0:     }
michael@0: 
michael@0:     public void init(Context context) {
michael@0:         LayoutInflater.from(context).inflate(R.layout.actionbar, this);
michael@0: 
michael@0:         mTitleView = (Button) findViewById(R.id.actionmode_title);
michael@0:         mMenuButton = (ImageButton) findViewById(R.id.actionbar_menu);
michael@0:         mActionButtonBar = (ViewGroup) findViewById(R.id.actionbar_buttons);
michael@0: 
michael@0:         mPopupMenu = new GeckoPopupMenu(getContext(), mMenuButton);
michael@0:         ((GeckoMenu) mPopupMenu.getMenu()).setActionItemBarPresenter(this);
michael@0: 
michael@0:         mMenuButton.setOnClickListener(new View.OnClickListener() {
michael@0:             public void onClick(View v) {
michael@0:                 openMenu();
michael@0:             }
michael@0:         });
michael@0:     }
michael@0: 
michael@0:     public void initForMode(final ActionModeCompat mode) {
michael@0:         mTitleView.setOnClickListener(mode);
michael@0:         mPopupMenu.setOnMenuItemClickListener(mode);
michael@0:     }
michael@0: 
michael@0:     public CharSequence getTitle() {
michael@0:         return mTitleView.getText();
michael@0:     }
michael@0: 
michael@0:     public void setTitle(CharSequence title) {
michael@0:         mTitleView.setText(title);
michael@0:     }
michael@0: 
michael@0:     public void setTitle(int resId) {
michael@0:         mTitleView.setText(resId);
michael@0:     }
michael@0: 
michael@0:     public Menu getMenu() {
michael@0:         return mPopupMenu.getMenu();
michael@0:     }
michael@0: 
michael@0:     public void invalidate() {
michael@0:         // onFinishInflate may not have been called yet on some versions of Android
michael@0:         if (mPopupMenu != null && mMenuButton != null) {
michael@0:             mMenuButton.setVisibility(mPopupMenu.getMenu().hasVisibleItems() ? View.VISIBLE : View.GONE);
michael@0:         }
michael@0:         super.invalidate();
michael@0:     }
michael@0: 
michael@0:     /* GeckoMenu.ActionItemBarPresenter */
michael@0:     @Override
michael@0:     public boolean addActionItem(View actionItem) {
michael@0:         final int count = mActionButtonBar.getChildCount();
michael@0:         if (count >= MAX_ACTION_ITEMS) {
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         int maxWidth = mActionButtonBar.getMeasuredWidth();
michael@0:         if (maxWidth == 0) {
michael@0:             mActionButtonBar.measure(SPEC, SPEC);
michael@0:             maxWidth = mActionButtonBar.getMeasuredWidth();
michael@0:         }
michael@0: 
michael@0:         // If the menu button is already visible, no need to account for it
michael@0:         if (mMenuButton.getVisibility() == View.GONE) {
michael@0:             // Since we don't know how many items will be added, we always reserve space for the overflow menu
michael@0:             mMenuButton.measure(SPEC, SPEC);
michael@0:             maxWidth -= mMenuButton.getMeasuredWidth();
michael@0:         }
michael@0: 
michael@0:         if (mActionButtonsWidth <= 0) {
michael@0:             mActionButtonsWidth = 0;
michael@0: 
michael@0:             // Loop over child views, measure them, and add their width to the taken width
michael@0:             for (int i = 0; i < count; i++) {
michael@0:                 View v = mActionButtonBar.getChildAt(i);
michael@0:                 v.measure(SPEC, SPEC);
michael@0:                 mActionButtonsWidth += v.getMeasuredWidth();
michael@0:             }
michael@0:         }
michael@0: 
michael@0:         actionItem.measure(SPEC, SPEC);
michael@0:         int w = actionItem.getMeasuredWidth();
michael@0:         if (mActionButtonsWidth + w < maxWidth) {
michael@0:             // We cache the new width of our children.
michael@0:             mActionButtonsWidth += w;
michael@0:             mActionButtonBar.addView(actionItem);
michael@0:             return true;
michael@0:         }
michael@0: 
michael@0:         return false;
michael@0:     }
michael@0: 
michael@0:     /* GeckoMenu.ActionItemBarPresenter */
michael@0:     @Override
michael@0:     public void removeActionItem(View actionItem) {
michael@0:         actionItem.measure(SPEC, SPEC);
michael@0:         mActionButtonsWidth -= actionItem.getMeasuredWidth();
michael@0:         mActionButtonBar.removeView(actionItem);
michael@0:     }
michael@0: 
michael@0:     public void openMenu() {
michael@0:         mPopupMenu.openMenu();
michael@0:     }
michael@0: 
michael@0:     public void closeMenu() {
michael@0:         mPopupMenu.dismiss();
michael@0:     }
michael@0: 
michael@0:     public void animateIn() {
michael@0:         long duration = AnimationUtils.getShortDuration(getContext());
michael@0:         TranslateAnimation t = new TranslateAnimation(Animation.RELATIVE_TO_SELF, -0.5f, Animation.RELATIVE_TO_SELF, 0f,
michael@0:                                                       Animation.RELATIVE_TO_SELF,  0f,   Animation.RELATIVE_TO_SELF, 0f);
michael@0:         t.setDuration(duration);
michael@0: 
michael@0:         ScaleAnimation s = new ScaleAnimation(1f, 1f, 0f, 1f,
michael@0:                                               Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
michael@0:         s.setDuration((long) (duration * 1.5f));
michael@0: 
michael@0:         mTitleView.startAnimation(t);
michael@0:         mActionButtonBar.startAnimation(s);
michael@0:         mMenuButton.startAnimation(s);
michael@0:     }
michael@0: }