The Tor Browser: mobile/android/base/ActionModeCompatView.java@fc2d59ddac77

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     3  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 package org.mozilla.gecko;

     7 import org.mozilla.gecko.animation.AnimationUtils;

     8 import org.mozilla.gecko.menu.GeckoMenu;

     9 import org.mozilla.gecko.widget.GeckoPopupMenu;

    11 import android.content.Context;

    12 import android.util.AttributeSet;

    13 import android.view.LayoutInflater;

    14 import android.view.Menu;

    15 import android.view.View;

    16 import android.view.ViewGroup;

    17 import android.view.animation.Animation;

    18 import android.view.animation.ScaleAnimation;

    19 import android.view.animation.TranslateAnimation;

    20 import android.widget.Button;

    21 import android.widget.ImageButton;

    22 import android.widget.LinearLayout;

    24 class ActionModeCompatView extends LinearLayout implements GeckoMenu.ActionItemBarPresenter {

    25     private final String LOGTAG = "GeckoActionModeCompatPresenter";

    27     private static final int SPEC = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);

    29     private Button mTitleView;

    30     private ImageButton mMenuButton;

    31     private ViewGroup mActionButtonBar;

    32     private GeckoPopupMenu mPopupMenu;

    34     // Maximum number of items to show as actions

    35     private static final int MAX_ACTION_ITEMS = 4;

    37     private int mActionButtonsWidth = 0;

    39     public ActionModeCompatView(Context context) {

    40         super(context);

    41         init(context);

    42     }

    44     public ActionModeCompatView(Context context, AttributeSet attrs) {

    45         super(context, attrs);

    46         init(context);

    47     }

    49     public ActionModeCompatView(Context context, AttributeSet attrs, int style) {

    50         super(context, attrs, style);

    51         init(context);

    52     }

    54     public void init(Context context) {

    55         LayoutInflater.from(context).inflate(R.layout.actionbar, this);

    57         mTitleView = (Button) findViewById(R.id.actionmode_title);

    58         mMenuButton = (ImageButton) findViewById(R.id.actionbar_menu);

    59         mActionButtonBar = (ViewGroup) findViewById(R.id.actionbar_buttons);

    61         mPopupMenu = new GeckoPopupMenu(getContext(), mMenuButton);

    62         ((GeckoMenu) mPopupMenu.getMenu()).setActionItemBarPresenter(this);

    64         mMenuButton.setOnClickListener(new View.OnClickListener() {

    65             public void onClick(View v) {

    66                 openMenu();

    67             }

    68         });

    69     }

    71     public void initForMode(final ActionModeCompat mode) {

    72         mTitleView.setOnClickListener(mode);

    73         mPopupMenu.setOnMenuItemClickListener(mode);

    74     }

    76     public CharSequence getTitle() {

    77         return mTitleView.getText();

    78     }

    80     public void setTitle(CharSequence title) {

    81         mTitleView.setText(title);

    82     }

    84     public void setTitle(int resId) {

    85         mTitleView.setText(resId);

    86     }

    88     public Menu getMenu() {

    89         return mPopupMenu.getMenu();

    90     }

    92     public void invalidate() {

    93         // onFinishInflate may not have been called yet on some versions of Android

    94         if (mPopupMenu != null && mMenuButton != null) {

    95             mMenuButton.setVisibility(mPopupMenu.getMenu().hasVisibleItems() ? View.VISIBLE : View.GONE);

    96         }

    97         super.invalidate();

    98     }

   100     /* GeckoMenu.ActionItemBarPresenter */

   101     @Override

   102     public boolean addActionItem(View actionItem) {

   103         final int count = mActionButtonBar.getChildCount();

   104         if (count >= MAX_ACTION_ITEMS) {

   105             return false;

   106         }

   108         int maxWidth = mActionButtonBar.getMeasuredWidth();

   109         if (maxWidth == 0) {

   110             mActionButtonBar.measure(SPEC, SPEC);

   111             maxWidth = mActionButtonBar.getMeasuredWidth();

   112         }

   114         // If the menu button is already visible, no need to account for it

   115         if (mMenuButton.getVisibility() == View.GONE) {

   116             // Since we don't know how many items will be added, we always reserve space for the overflow menu

   117             mMenuButton.measure(SPEC, SPEC);

   118             maxWidth -= mMenuButton.getMeasuredWidth();

   119         }

   121         if (mActionButtonsWidth <= 0) {

   122             mActionButtonsWidth = 0;

   124             // Loop over child views, measure them, and add their width to the taken width

   125             for (int i = 0; i < count; i++) {

   126                 View v = mActionButtonBar.getChildAt(i);

   127                 v.measure(SPEC, SPEC);

   128                 mActionButtonsWidth += v.getMeasuredWidth();

   129             }

   130         }

   132         actionItem.measure(SPEC, SPEC);

   133         int w = actionItem.getMeasuredWidth();

   134         if (mActionButtonsWidth + w < maxWidth) {

   135             // We cache the new width of our children.

   136             mActionButtonsWidth += w;

   137             mActionButtonBar.addView(actionItem);

   138             return true;

   139         }

   141         return false;

   142     }

   144     /* GeckoMenu.ActionItemBarPresenter */

   145     @Override

   146     public void removeActionItem(View actionItem) {

   147         actionItem.measure(SPEC, SPEC);

   148         mActionButtonsWidth -= actionItem.getMeasuredWidth();

   149         mActionButtonBar.removeView(actionItem);

   150     }

   152     public void openMenu() {

   153         mPopupMenu.openMenu();

   154     }

   156     public void closeMenu() {

   157         mPopupMenu.dismiss();

   158     }

   160     public void animateIn() {

   161         long duration = AnimationUtils.getShortDuration(getContext());

   162         TranslateAnimation t = new TranslateAnimation(Animation.RELATIVE_TO_SELF, -0.5f, Animation.RELATIVE_TO_SELF, 0f,

   163                                                       Animation.RELATIVE_TO_SELF,  0f,   Animation.RELATIVE_TO_SELF, 0f);

   164         t.setDuration(duration);

   166         ScaleAnimation s = new ScaleAnimation(1f, 1f, 0f, 1f,

   167                                               Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);

   168         s.setDuration((long) (duration * 1.5f));

   170         mTitleView.startAnimation(t);

   171         mActionButtonBar.startAnimation(s);

   172         mMenuButton.startAnimation(s);

   173     }

   174 }

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