contrib/samples/applet/monitorapplet.cpp

   1 /****************************************************************************
   2 *
   3 *                       wxWindows HTML Applet Package
   4 *
   5 *               Copyright (C) 1991-2001 SciTech Software, Inc.
   6 *                            All rights reserved.
   7 *
   8 *  ======================================================================
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  24 *  ======================================================================
  25 *
  26 * Language:     ANSI C++
  27 * Environment:  Any
  28 *
  29 * Description:  Main wxApplet class implementation
  30 *
  31 ****************************************************************************/
  32
  33 // For compilers that support precompilation
  34 #include "wx/wxprec.h"
  35
  36 // Include private headers
  37 #include "monitorapplet.h"
  38
  39 /*---------------------------- Global variables ---------------------------*/
  40
  41 // Implement the dynamic class so it can be constructed dynamically
  42 IMPLEMENT_DYNAMIC_CLASS(MonitorApplet, wxApplet);
  43
  44 // Event handler table.
  45 BEGIN_EVENT_TABLE(MonitorApplet, wxApplet)
  46     EVT_LISTBOX(ID_LISTBOX_MFTR,        MonitorApplet::OnChange)
  47     EVT_LISTBOX(ID_LISTBOX_MDL,         MonitorApplet::OnChange)
  48 END_EVENT_TABLE()
  49
  50 // Include database of known monitors. Normally this would come from a
  51 // real database on disk, but for this simple example we hard code all
  52 // the values into a table.
  53 #include "monitors.c"
  54
  55 /*------------------------- Implementation --------------------------------*/
  56
  57 /****************************************************************************
  58 REMARKS:
  59 Constructor called during dynamic creation. Simple initialise all
  60 internal values for the class so that it can be properly created later
  61 via the virtual Create member function.
  62 ****************************************************************************/
  63 MonitorApplet::MonitorApplet()
  64 {
  65     m_Mfr = NULL;
  66     m_Model = NULL;
  67     m_Data = NULL;
  68 }
  69
  70 /****************************************************************************
  71 REMARKS:
  72 Psuedo virtual constructor for the MonitorApplet class.
  73 ****************************************************************************/
  74 bool MonitorApplet::Create(
  75     wxHtmlAppletWindow *parent,
  76     const wxSize& size,
  77     long style)
  78 {
  79     bool ret = wxApplet::Create(parent, size, style);
  80     if (ret) {
  81         // Read our cookie or create it if it does not exist
  82         if ((m_Data = (MonitorData*)parent->FindCookie(MONITOR_COOKIE_NAME)) == NULL) {
  83             m_Data = new MonitorData;
  84             memset(&m_Data->m_Monitor,0,sizeof(m_Data->m_Monitor));
  85             parent->RegisterCookie(MONITOR_COOKIE_NAME,m_Data);
  86             }
  87
  88         // Create all the controls and initialise them
  89         MonitorDialogFunc(this,true,true);
  90         if ((m_Mfr = new ComboBox(this , ID_LISTBOX_MFTR, ID_TEXTCTRL_MFTR)) == NULL)
  91             return false;
  92         if ((m_Model = new ComboBox(this , ID_LISTBOX_MDL, ID_TEXTCTRL_MDL)) == NULL)
  93             return false;
  94         ReadMfrList();
  95         ReadModelList(true);
  96         }
  97     return ret;
  98 }
  99
 100 /****************************************************************************
 101 REMARKS:
 102 Destructor for the MonitorApplet class.
 103 ****************************************************************************/
 104 MonitorApplet::~MonitorApplet()
 105 {
 106     delete m_Mfr;
 107     delete m_Model;
 108 }
 109
 110 /****************************************************************************
 111 REMARKS:
 112 Save the current state for the applet to our cookie
 113 ****************************************************************************/
 114 void MonitorApplet::SaveCurrentState()
 115 {
 116     // Read currently selected strings into cookie
 117     strcpy(m_Data->m_Monitor.m_Mfr,m_Mfr->GetStringSelection());
 118     strcpy(m_Data->m_Monitor.m_Model,m_Model->GetStringSelection());
 119 }
 120
 121 /****************************************************************************
 122 REMARKS:
 123 Handles user navigation away from the applet via an HTML link
 124 ****************************************************************************/
 125 void MonitorApplet::OnLinkClicked(
 126     const wxHtmlLinkInfo&)
 127 {
 128     SaveCurrentState();
 129 }
 130
 131 /****************************************************************************
 132 REMARKS:
 133 Handles user navigation away from the applet via the history forward command
 134 ****************************************************************************/
 135 void MonitorApplet::OnHistoryForward()
 136 {
 137     SaveCurrentState();
 138 }
 139
 140 /****************************************************************************
 141 REMARKS:
 142 Handles user navigation away from the applet via the history back command
 143 ****************************************************************************/
 144 void MonitorApplet::OnHistoryBack()
 145 {
 146     SaveCurrentState();
 147 }
 148
 149 /****************************************************************************
 150 REMARKS:
 151 Handles inter applet communication messages
 152 ****************************************************************************/
 153 void MonitorApplet::OnMessage(
 154     wxEvent& msg)
 155 {
 156     msg.Skip(true);
 157 }
 158
 159 /****************************************************************************
 160 REMARKS:
 161 ****************************************************************************/
 162 void MonitorApplet::OnChange(
 163     wxCommandEvent &evt)
 164 {
 165     if (evt.GetId() == m_Mfr->GetListBoxId()) {
 166         m_Mfr->OnChange(evt);
 167         ReadModelList(true);
 168         }
 169     else if (evt.GetId() == m_Model->GetListBoxId()) {
 170         m_Model->OnChange(evt);
 171         }
 172 }
 173
 174 /****************************************************************************
 175 REMARKS:
 176 Updates the manufacturer list for the dialog box from the database.
 177 ****************************************************************************/
 178 void MonitorApplet::ReadMfrList()
 179 {
 180     char            buf[80] = "";
 181     int             i,selected = 0;
 182     MonitorEntry    *m;
 183
 184     m_Mfr->Clear();
 185     for (m = m_Monitors,i = 0; m->m_Mfr[0] != 0; m++) {
 186         if (stricmp(buf,m->m_Mfr) != 0) {
 187             m_Mfr->Append(m->m_Mfr);
 188             if (stricmp(m_Data->m_Monitor.m_Mfr,m->m_Mfr) == 0)
 189                 selected = i;
 190             strcpy(buf,m->m_Mfr);
 191             i++;
 192             }
 193         }
 194     m_Mfr->Select(selected);
 195 }
 196
 197 /****************************************************************************
 198 REMARKS:
 199 Updates the model list for the dialog box for the currently selected
 200 manufacturer type.
 201 ****************************************************************************/
 202 void MonitorApplet::ReadModelList(
 203     bool selectCurrent)
 204 {
 205     int             i,selected = 0;
 206     MonitorEntry    *m;
 207     wxString        mfrStr;
 208
 209     mfrStr = m_Mfr->GetStringSelection();
 210     m_Model->Clear();
 211     for (m = m_Monitors,i = 0; m->m_Mfr[0] != 0; m++) {
 212         if (stricmp(mfrStr,m->m_Mfr) == 0) {
 213             m_Model->Append(m->m_Model);
 214             if (selectCurrent && stricmp(m_Data->m_Monitor.m_Model,m->m_Model) == 0)
 215                 selected = i;
 216             i++;
 217             }
 218         }
 219     m_Model->Select(selected);
 220 }
 221