juce/source/extras/browser plugins/demo/src/JuceBrowserPluginDemo.cpp

   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 #include "../../wrapper/juce_BrowserPluginComponent.h"
  27
  28
  29 //==============================================================================
  30 /**
  31     This is our top-level component for our plugin..
  32 */
  33 class JuceDemoBrowserPlugin  : public BrowserPluginComponent,
  34                                public Button::Listener
  35 {
  36 public:
  37     JuceDemoBrowserPlugin()
  38     {
  39         addAndMakeVisible (textBox = new TextEditor (String::empty));
  40         textBox->setMultiLine (true);
  41         textBox->setBounds (8, 8, 300, 300);
  42
  43         addAndMakeVisible (button = new TextButton ("Send a message to the webpage"));
  44         button->setBounds (320, 8, 180, 22);
  45         button->addListener (this);
  46         button->setEnabled (false);
  47
  48         ourJavascriptObject = new DemoBrowserObject (this);
  49
  50         textBox->setText ("Browser version info: " + getBrowserVersion());
  51     }
  52
  53     ~JuceDemoBrowserPlugin()
  54     {
  55         deleteAllChildren();
  56     }
  57
  58     const var getJavascriptObject()
  59     {
  60         // The browser calls this to get the javascript object that represents our plugin..
  61         return ourJavascriptObject;
  62     }
  63
  64     void paint (Graphics& g)
  65     {
  66         g.fillAll (Colours::lightblue);
  67     }
  68
  69     void setJavascriptObjectFromBrowser (var callbackObject)
  70     {
  71         javascriptObjectFromBrowser = callbackObject;
  72
  73         button->setEnabled (javascriptObjectFromBrowser.isObject());
  74     }
  75
  76     void buttonClicked (Button*)
  77     {
  78         javascriptObjectFromBrowser.call ("printmessage", "This is a message sent from the plugin...");
  79     }
  80
  81     var ourJavascriptObject;
  82     var javascriptObjectFromBrowser;
  83     TextEditor* textBox;
  84     TextButton* button;
  85
  86     //==============================================================================
  87     /** This is the javascript object that the browser uses when the webpage accesses
  88         methods or properties on our plugin object.
  89     */
  90     class DemoBrowserObject : public DynamicObject
  91     {
  92     public:
  93         DemoBrowserObject (JuceDemoBrowserPlugin* owner_)
  94             : owner (owner_)
  95         {
  96             // Add a couple of methods to our object..
  97             setMethod ("printText", (var::MethodFunction) &DemoBrowserObject::printText);
  98             setMethod ("popUpMessageBox", (var::MethodFunction) &DemoBrowserObject::popUpMessageBox);
  99             setMethod ("registerCallbackObject", (var::MethodFunction) &DemoBrowserObject::registerCallbackObject);
 100
 101             // Add some value properties that the webpage can access
 102             setProperty ("property1", "testing testing...");
 103             setProperty ("property2", 12345678.0);
 104         }
 105
 106         DemoBrowserObject()
 107         {
 108         }
 109
 110         //==============================================================================
 111         // These methods are called by javascript in the webpage...
 112         const var printText (const var* params, int numParams)
 113         {
 114             if (numParams > 0)
 115                 owner->textBox->setText (owner->textBox->getText() + "\n" + params[0].toString());
 116
 117             return "text was printed ok!";
 118         }
 119
 120         const var popUpMessageBox (const var* params, int numParams)
 121         {
 122             if (numParams > 0)
 123                 AlertWindow::showMessageBox (AlertWindow::InfoIcon,
 124                                              "A message from the webpage",
 125                                              params[0].toString(),
 126                                              String::empty, owner);
 127             return var();
 128         }
 129
 130         const var registerCallbackObject (const var* params, int numParams)
 131         {
 132             if (numParams > 0)
 133                 owner->setJavascriptObjectFromBrowser (params[0]);
 134
 135             return var();
 136         }
 137
 138         //==============================================================================
 139         JuceDemoBrowserPlugin* owner;
 140     };
 141 };
 142
 143 BrowserPluginComponent* JUCE_CALLTYPE createBrowserPlugin()
 144 {
 145     return new JuceDemoBrowserPlugin();
 146 }