src/ui/android/java/src/org/chromium/ui/ColorPickerSimple.java

   1 // Copyright 2013 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.ui;
   6
   7 import android.content.Context;
   8 import android.graphics.Color;
   9 import android.util.AttributeSet;
  10 import android.widget.ListView;
  11
  12 import org.chromium.ui.ColorSuggestionListAdapter.OnColorSuggestionClickListener;
  13
  14 /**
  15  * Draws a grid of (predefined) colors and allows the user to choose one of
  16  * those colors.
  17  */
  18 public class ColorPickerSimple extends ListView implements OnColorSuggestionClickListener {
  19
  20     private OnColorChangedListener mOnColorChangedListener;
  21
  22     private static final int[] DEFAULT_COLORS = {
  23         Color.RED,
  24         Color.CYAN,
  25         Color.BLUE,
  26         Color.GREEN,
  27         Color.MAGENTA,
  28         Color.YELLOW,
  29         Color.BLACK,
  30         Color.WHITE
  31     };
  32
  33     private static final int[] DEFAULT_COLOR_LABEL_IDS = {
  34         R.string.color_picker_button_red,
  35         R.string.color_picker_button_cyan,
  36         R.string.color_picker_button_blue,
  37         R.string.color_picker_button_green,
  38         R.string.color_picker_button_magenta,
  39         R.string.color_picker_button_yellow,
  40         R.string.color_picker_button_black,
  41         R.string.color_picker_button_white
  42     };
  43
  44     public ColorPickerSimple(Context context) {
  45         super(context);
  46     }
  47
  48     public ColorPickerSimple(Context context, AttributeSet attrs) {
  49         super(context, attrs);
  50     }
  51
  52     public ColorPickerSimple(Context context, AttributeSet attrs, int defStyle) {
  53         super(context, attrs, defStyle);
  54     }
  55
  56     /**
  57      * Initializes the listener and sets the adapter for the given list of suggestions. If the
  58      * suggestions is null a default set of colors will be used.
  59      *
  60      * @param suggestions The list of suggestions that should be displayed.
  61      * @param onColorChangedListener The listener that gets notified when the user touches
  62      *                               a color.
  63      */
  64     public void init(ColorSuggestion[] suggestions,
  65                      OnColorChangedListener onColorChangedListener) {
  66         mOnColorChangedListener = onColorChangedListener;
  67
  68         if (suggestions == null) {
  69             suggestions = new ColorSuggestion[DEFAULT_COLORS.length];
  70             for (int i = 0; i < suggestions.length; ++i) {
  71                 suggestions[i] = new ColorSuggestion(DEFAULT_COLORS[i],
  72                         getContext().getString(DEFAULT_COLOR_LABEL_IDS[i]));
  73             }
  74         }
  75
  76         ColorSuggestionListAdapter adapter = new ColorSuggestionListAdapter(
  77                 getContext(), suggestions);
  78         adapter.setOnColorSuggestionClickListener(this);
  79         setAdapter(adapter);
  80     }
  81
  82     @Override
  83     public void onColorSuggestionClick(ColorSuggestion suggestion) {
  84         mOnColorChangedListener.onColorChanged(suggestion.mColor);
  85     }
  86 }