src/apps/launchbox/Panel.cpp

   1 /*
   2  * Copyright 2006, Haiku.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Stephan Aßmus <superstippi@gmx.de>
   7  */
   8
   9 #include "Panel.h"
  10
  11 #include <stdio.h>
  12
  13 #include <InterfaceDefs.h>
  14 #include <Message.h>
  15 #include <MessageFilter.h>
  16
  17 class EscapeFilter : public BMessageFilter {
  18  public:
  19         EscapeFilter(Panel* target)
  20                 : BMessageFilter(B_ANY_DELIVERY, B_ANY_SOURCE),
  21                   fPanel(target)
  22                 {
  23                 }
  24         virtual ~EscapeFilter()
  25                 {
  26                 }
  27         virtual filter_result   Filter(BMessage* message, BHandler** target)
  28                 {
  29                         filter_result result = B_DISPATCH_MESSAGE;
  30                         switch (message->what) {
  31                                 case B_KEY_DOWN:
  32                                 case B_UNMAPPED_KEY_DOWN: {
  33                                         uint32 key;
  34                                         if (message->FindInt32("raw_char", (int32*)&key) >= B_OK) {
  35                                                 if (key == B_ESCAPE) {
  36                                                         result = B_SKIP_MESSAGE;
  37                                                         fPanel->Cancel();
  38                                                 }
  39                                         }
  40                                         break;
  41                                 }
  42                                 default:
  43                                         break;
  44                         }
  45                         return result;
  46                 }
  47  private:
  48         Panel*          fPanel;
  49 };
  50
  51 // constructor
  52 Panel::Panel(BRect frame, const char* title,
  53                          window_type type, uint32 flags,
  54                          uint32 workspace)
  55         : BWindow(frame, title, type, flags, workspace)
  56 {
  57         _InstallFilter();
  58 }
  59
  60 // constructor
  61 Panel::Panel(BRect frame, const char* title,
  62                          window_look look, window_feel feel,
  63                          uint32 flags, uint32 workspace)
  64         : BWindow(frame, title, look, feel, flags, workspace)
  65 {
  66         _InstallFilter();
  67 }
  68
  69 // destructor
  70 Panel::~Panel()
  71 {
  72 }
  73
  74 // MessageReceived
  75 void
  76 Panel::Cancel()
  77 {
  78         PostMessage(B_QUIT_REQUESTED);
  79 }
  80
  81 // _InstallFilter
  82 void
  83 Panel::_InstallFilter()
  84 {
  85         AddCommonFilter(new EscapeFilter(this));
  86 }