src/content/public/android/java/src/org/chromium/content/browser/input/SelectPopupDropdown.java

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 package org.chromium.content.browser.input;
   6
   7 import android.content.Context;
   8 import android.graphics.Rect;
   9 import android.view.View;
  10 import android.widget.AdapterView;
  11
  12 import org.chromium.content.browser.ContentViewCore;
  13 import org.chromium.content.browser.RenderCoordinates;
  14 import org.chromium.ui.DropdownAdapter;
  15 import org.chromium.ui.DropdownItem;
  16 import org.chromium.ui.DropdownPopupWindow;
  17
  18 import java.util.List;
  19
  20 /**
  21  * Handles the dropdown popup for the <select> HTML tag support.
  22  */
  23 public class SelectPopupDropdown implements SelectPopup {
  24
  25     private final ContentViewCore mContentViewCore;
  26     private final Context mContext;
  27
  28     private DropdownPopupWindow mDropdownPopupWindow;
  29     private int mInitialSelection = -1;
  30
  31     public SelectPopupDropdown(ContentViewCore contentViewCore, List<SelectPopupItem> items,
  32             Rect bounds, int[] selected) {
  33         mContentViewCore = contentViewCore;
  34         mContext = mContentViewCore.getContext();
  35         mDropdownPopupWindow = new DropdownPopupWindow(mContext,
  36                 mContentViewCore.getViewAndroidDelegate());
  37         mDropdownPopupWindow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
  38             @Override
  39             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
  40                 int[] selectedIndices = {position};
  41                 mContentViewCore.selectPopupMenuItems(selectedIndices);
  42                 hide();
  43             }
  44         });
  45         if (selected.length > 0) {
  46             mInitialSelection = selected[0];
  47         }
  48         DropdownItem[] dropdownItems = items.toArray(new DropdownItem[items.size()]);
  49         mDropdownPopupWindow.setAdapter(new DropdownAdapter(mContext, dropdownItems, null));
  50         RenderCoordinates renderCoordinates = mContentViewCore.getRenderCoordinates();
  51         float anchorX = renderCoordinates.fromPixToDip(
  52                 renderCoordinates.fromLocalCssToPix(bounds.left));
  53         float anchorY = renderCoordinates.fromPixToDip(
  54                 renderCoordinates.fromLocalCssToPix(bounds.top));
  55         float anchorWidth = renderCoordinates.fromPixToDip(
  56                 renderCoordinates.fromLocalCssToPix(bounds.right)) - anchorX;
  57         float anchorHeight = renderCoordinates.fromPixToDip(
  58                 renderCoordinates.fromLocalCssToPix(bounds.bottom)) - anchorY;
  59         mDropdownPopupWindow.setAnchorRect(anchorX, anchorY, anchorWidth, anchorHeight);
  60     }
  61
  62     @Override
  63     public void show() {
  64         mDropdownPopupWindow.show();
  65         if (mInitialSelection >= 0) {
  66             mDropdownPopupWindow.getListView().setSelection(mInitialSelection);
  67         }
  68     }
  69
  70     @Override
  71     public void hide() {
  72         mDropdownPopupWindow.dismiss();
  73     }
  74 }