juce/source/extras/the jucer/src/model/paintelements/jucer_ImageResourceProperty.h

   1 /*
   2   ==============================================================================
   3
   4    This file is part of the JUCE library - "Jules' Utility Class Extensions"
   5    Copyright 2004-11 by Raw Material Software Ltd.
   6
   7   ------------------------------------------------------------------------------
   8
   9    JUCE can be redistributed and/or modified under the terms of the GNU General
  10    Public License (Version 2), as published by the Free Software Foundation.
  11    A copy of the license is included in the JUCE distribution, or can be found
  12    online at www.gnu.org/licenses.
  13
  14    JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
  15    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  16    A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  17
  18   ------------------------------------------------------------------------------
  19
  20    To release a closed-source product which uses JUCE, commercial licenses are
  21    available: visit www.rawmaterialsoftware.com/juce for more information.
  22
  23   ==============================================================================
  24 */
  25
  26 #ifndef __JUCER_IMAGERESOURCEPROPERTY_JUCEHEADER__
  27 #define __JUCER_IMAGERESOURCEPROPERTY_JUCEHEADER__
  28
  29
  30 //==============================================================================
  31 /**
  32     A property that lets you pick a resource to use as an image, or create a
  33     new one with a file selector.
  34 */
  35 template <class ElementType>
  36 class ImageResourceProperty    : public ChoicePropertyComponent,
  37                                  private ChangeListener
  38 {
  39 public:
  40     ImageResourceProperty (JucerDocument& document_,
  41                            ElementType* const element_,
  42                            const String& name,
  43                            const bool allowChoiceOfNoResource_)
  44         : ChoicePropertyComponent (name),
  45           element (element_),
  46           document (document_),
  47           allowChoiceOfNoResource (allowChoiceOfNoResource_)
  48     {
  49         choices.add ("-- create a new image resource -- ");
  50         choices.add (String::empty);
  51         if (allowChoiceOfNoResource_)
  52             choices.add ("<< none >>");
  53         choices.addArray (document_.getResources().getResourceNames());
  54
  55         document_.addChangeListener (this);
  56     }
  57
  58     ImageResourceProperty (ElementType* const element_,
  59                            const String& name,
  60                            const bool allowChoiceOfNoResource_ = false)
  61         : ChoicePropertyComponent (name),
  62           element (element_),
  63           document (*element_->getDocument()),
  64           allowChoiceOfNoResource (allowChoiceOfNoResource_)
  65     {
  66         choices.add ("-- create a new image resource -- ");
  67         choices.add (String::empty);
  68         if (allowChoiceOfNoResource_)
  69             choices.add ("<< none >>");
  70
  71         choices.addArray (document.getResources().getResourceNames());
  72
  73         document.addChangeListener (this);
  74     }
  75
  76     ~ImageResourceProperty()
  77     {
  78         document.removeChangeListener (this);
  79     }
  80
  81     //==============================================================================
  82     virtual void setResource (const String& newName) = 0;
  83
  84     virtual const String getResource() const = 0;
  85
  86     //==============================================================================
  87     void setIndex (int newIndex)
  88     {
  89         if (newIndex == 0)
  90         {
  91             String resource (document.getResources()
  92                      .browseForResource ("Select an image file to add as a resource",
  93                                          "*.jpg;*.jpeg;*.png;*.gif;*.svg",
  94                                          File::nonexistent,
  95                                          String::empty));
  96
  97             if (resource.isNotEmpty())
  98                 setResource (resource);
  99         }
 100         else
 101         {
 102             if (choices[newIndex] == "<< none >>" && allowChoiceOfNoResource)
 103                 setResource (String::empty);
 104             else
 105                 setResource (choices [newIndex]);
 106         }
 107     }
 108
 109     int getIndex() const
 110     {
 111         if (getResource().isEmpty())
 112             return -1;
 113
 114         return choices.indexOf (getResource());
 115     }
 116
 117     void changeListenerCallback (ChangeBroadcaster*)
 118     {
 119         refresh();
 120     }
 121
 122 protected:
 123     ElementType* const element;
 124     JucerDocument& document;
 125     const bool allowChoiceOfNoResource;
 126 };
 127
 128
 129 #endif   // __JUCER_IMAGERESOURCEPROPERTY_JUCEHEADER__