juce/source/extras/JuceDemo/Source/demos/WebBrowserDemo.cpp

   1 /*
   2   ==============================================================================
   3
   4    This file is part of the JUCE library - "Jules' Utility Class Extensions"
   5    Copyright 2004-9 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 "../jucedemo_headers.h"
  27
  28 #if JUCE_WEB_BROWSER
  29
  30 //==============================================================================
  31 /** We'll use a subclass of WebBrowserComponent to demonstrate how to get callbacks
  32     when the browser changes URL. You don't need to do this, you can just also
  33     just use the WebBrowserComponent class directly.
  34 */
  35 class DemoBrowserComponent  : public WebBrowserComponent
  36 {
  37 public:
  38     //==============================================================================
  39     DemoBrowserComponent (TextEditor& addressTextBox_)
  40         : addressTextBox (addressTextBox_)
  41     {
  42     }
  43
  44     // This method gets called when the browser is about to go to a new URL..
  45     bool pageAboutToLoad (const String& newURL)
  46     {
  47         // We'll just update our address box to reflect the new location..
  48         addressTextBox.setText (newURL, false);
  49
  50         // we could return false here to tell the browser not to go ahead with
  51         // loading the page.
  52         return true;
  53     }
  54
  55 private:
  56     TextEditor& addressTextBox;
  57
  58     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (DemoBrowserComponent);
  59 };
  60
  61
  62 //==============================================================================
  63 class WebBrowserDemo   : public Component,
  64                          public TextEditor::Listener,
  65                          public ButtonListener
  66 {
  67 public:
  68     //==============================================================================
  69     WebBrowserDemo()
  70         : goButton ("Go", "Go to URL"),
  71           backButton ("<<", "Back"),
  72           forwardButton (">>", "Forward")
  73     {
  74         setName ("Web Browser");
  75
  76         // Create an address box..
  77         addAndMakeVisible (&addressTextBox);
  78         addressTextBox.setTextToShowWhenEmpty ("Enter a web address, e.g. http://www.rawmaterialsoftware.com", Colours::grey);
  79         addressTextBox.addListener (this);
  80
  81         // create the actual browser component
  82         addAndMakeVisible (webView = new DemoBrowserComponent (addressTextBox));
  83
  84         // add some buttons..
  85         addAndMakeVisible (&goButton);
  86         goButton.addListener (this);
  87         addAndMakeVisible (&backButton);
  88         backButton.addListener (this);
  89         addAndMakeVisible (&forwardButton);
  90         forwardButton.addListener (this);
  91
  92         // send the browser to a start page..
  93         webView->goToURL ("http://www.google.com");
  94     }
  95
  96     ~WebBrowserDemo()
  97     {
  98     }
  99
 100     void resized()
 101     {
 102         webView->setBounds (10, 45, getWidth() - 20, getHeight() - 55);
 103         goButton.setBounds (getWidth() - 45, 10, 35, 25);
 104         addressTextBox.setBounds (100, 10, getWidth() - 155, 25);
 105         backButton.setBounds (10, 10, 35, 25);
 106         forwardButton.setBounds (55, 10, 35, 25);
 107     }
 108
 109     void textEditorTextChanged (TextEditor&)             {}
 110     void textEditorEscapeKeyPressed (TextEditor&)        {}
 111     void textEditorFocusLost (TextEditor&)               {}
 112
 113     void textEditorReturnKeyPressed (TextEditor&)
 114     {
 115         webView->goToURL (addressTextBox.getText());
 116     }
 117
 118     void buttonClicked (Button* b)
 119     {
 120         if (b == &backButton)
 121             webView->goBack();
 122         else if (b == &forwardButton)
 123             webView->goForward();
 124         else if (b == &goButton)
 125             webView->goToURL (addressTextBox.getText());
 126     }
 127
 128 private:
 129     ScopedPointer<DemoBrowserComponent> webView;
 130
 131     TextEditor addressTextBox;
 132     TextButton goButton, backButton, forwardButton;
 133
 134     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (WebBrowserDemo);
 135 };
 136
 137
 138 //==============================================================================
 139 Component* createWebBrowserDemo()
 140 {
 141     return new WebBrowserDemo();
 142 }
 143
 144 #endif