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 "wx/wx.h"
  38 #include "monitorapplet.h"
  39
  40 /*---------------------------- Global variables ---------------------------*/
  41
  42 // Implement the dynamic class so it can be constructed dynamically
  43 IMPLEMENT_DYNAMIC_CLASS(MonitorApplet, wxApplet);
  44
  45 // Event handler table.
  46 BEGIN_EVENT_TABLE(MonitorApplet, wxApplet)
  47     EVT_LISTBOX(ID_LISTBOX_MFTR,        MonitorApplet::OnChange)
  48     EVT_LISTBOX(ID_LISTBOX_MDL,         MonitorApplet::OnChange)
  49 END_EVENT_TABLE()
  50
  51 // Include database of known monitors. Normally this would come from a
  52 // real database on disk, but for this simple example we hard code all
  53 // the values into a table.
  54 #include "monitors.c"
  55
  56 /*------------------------- Implementation --------------------------------*/
  57
  58 /****************************************************************************
  59 REMARKS:
  60 Constructor called during dynamic creation. Simple initialise all
  61 internal values for the class so that it can be properly created later
  62 via the virtual Create member function.
  63 ****************************************************************************/
  64 MonitorApplet::MonitorApplet()
  65 {
  66     m_Mfr = NULL;
  67     m_Model = NULL;
  68     m_Data = NULL;
  69 }
  70
  71 /****************************************************************************
  72 REMARKS:
  73 Psuedo virtual constructor for the MonitorApplet class.
  74 ****************************************************************************/
  75 bool MonitorApplet::Create(
  76     wxHtmlAppletWindow *parent,
  77     const wxSize& size,
  78     long style)
  79 {
  80     bool ret = wxApplet::Create(parent, size, style);
  81     if (ret) {
  82         // Read our cookie or create it if it does not exist
  83         if ((m_Data = (MonitorData*)parent->FindCookie(MONITOR_COOKIE_NAME)) == NULL) {
  84             m_Data = new MonitorData;
  85             memset(&m_Data->m_Monitor,0,sizeof(m_Data->m_Monitor));
  86             parent->RegisterCookie(MONITOR_COOKIE_NAME,m_Data);
  87             }
  88
  89         // Create all the controls and initialise them
  90         MonitorDialogFunc(this,true,true);
  91         if ((m_Mfr = new ComboBox(this , ID_LISTBOX_MFTR, ID_TEXTCTRL_MFTR)) == NULL)
  92             return false;
  93         if ((m_Model = new ComboBox(this , ID_LISTBOX_MDL, ID_TEXTCTRL_MDL)) == NULL)
  94             return false;
  95         ReadMfrList();
  96         ReadModelList(true);
  97         }
  98     return ret;
  99 }
 100
 101 /****************************************************************************
 102 REMARKS:
 103 Destructor for the MonitorApplet class.
 104 ****************************************************************************/
 105 MonitorApplet::~MonitorApplet()
 106 {
 107     delete m_Mfr;
 108     delete m_Model;
 109 }
 110
 111 /****************************************************************************
 112 REMARKS:
 113 Save the current state for the applet to our cookie
 114 ****************************************************************************/
 115 void MonitorApplet::SaveCurrentState()
 116 {
 117     // Read currently selected strings into cookie
 118     strcpy(m_Data->m_Monitor.m_Mfr,m_Mfr->GetStringSelection());
 119     strcpy(m_Data->m_Monitor.m_Model,m_Model->GetStringSelection());
 120 }
 121
 122 /****************************************************************************
 123 REMARKS:
 124 Handles user navigation away from the applet via an HTML link
 125 ****************************************************************************/
 126 void MonitorApplet::OnLinkClicked(
 127     const wxHtmlLinkInfo&)
 128 {
 129     SaveCurrentState();
 130 }
 131
 132 /****************************************************************************
 133 REMARKS:
 134 Handles user navigation away from the applet via the history forward command
 135 ****************************************************************************/
 136 void MonitorApplet::OnHistoryForward()
 137 {
 138     SaveCurrentState();
 139 }
 140
 141 /****************************************************************************
 142 REMARKS:
 143 Handles user navigation away from the applet via the history back command
 144 ****************************************************************************/
 145 void MonitorApplet::OnHistoryBack()
 146 {
 147     SaveCurrentState();
 148 }
 149
 150 /****************************************************************************
 151 REMARKS:
 152 Handles inter applet communication messages
 153 ****************************************************************************/
 154 void MonitorApplet::OnMessage(
 155     wxEvent& msg)
 156 {
 157     msg.Skip(true);
 158 }
 159
 160 /****************************************************************************
 161 REMARKS:
 162 ****************************************************************************/
 163 void MonitorApplet::OnChange(
 164     wxCommandEvent &evt)
 165 {
 166     if (evt.GetId() == m_Mfr->GetListBoxId()) {
 167         m_Mfr->OnChange(evt);
 168         ReadModelList(true);
 169         }
 170     else if (evt.GetId() == m_Model->GetListBoxId()) {
 171         m_Model->OnChange(evt);
 172         }
 173 }
 174
 175 /****************************************************************************
 176 REMARKS:
 177 Updates the manufacturer list for the dialog box from the database.
 178 ****************************************************************************/
 179 void MonitorApplet::ReadMfrList()
 180 {
 181     char            buf[80] = "";
 182     int             i,selected = 0;
 183     MonitorEntry    *m;
 184
 185     m_Mfr->Clear();
 186     for (m = m_Monitors,i = 0; m->m_Mfr[0] != 0; m++) {
 187         if (wxStricmp(buf,m->m_Mfr) != 0) {
 188             m_Mfr->Append(m->m_Mfr);
 189             if (wxStricmp(m_Data->m_Monitor.m_Mfr,m->m_Mfr) == 0)
 190                 selected = i;
 191             strcpy(buf,m->m_Mfr);
 192             i++;
 193             }
 194         }
 195     m_Mfr->Select(selected);
 196 }
 197
 198 /****************************************************************************
 199 REMARKS:
 200 Updates the model list for the dialog box for the currently selected
 201 manufacturer type.
 202 ****************************************************************************/
 203 void MonitorApplet::ReadModelList(
 204     bool selectCurrent)
 205 {
 206     int             i,selected = 0;
 207     MonitorEntry    *m;
 208     wxString        mfrStr;
 209
 210     mfrStr = m_Mfr->GetStringSelection();
 211     m_Model->Clear();
 212     for (m = m_Monitors,i = 0; m->m_Mfr[0] != 0; m++) {
 213         if (wxStricmp(mfrStr,m->m_Mfr) == 0) {
 214             m_Model->Append(m->m_Model);
 215             if (selectCurrent && wxStricmp(m_Data->m_Monitor.m_Model,m->m_Model) == 0)
 216                 selected = i;
 217             i++;
 218             }
 219         }
 220     m_Model->Select(selected);
 221 }
 222