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added commands to toggle multiple selection and to select all items

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21107 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2003-06-13 13:23:49 +00:00
parent 970b97a267
commit 5f73281084
1 changed files with 183 additions and 78 deletions
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261
samples/htlbox/htlbox.cpp
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@@ -24,12 +24,12 @@
#pragma hdrstop
#endif
// for all others, include the necessary headers (this file is usually all you
// need because it includes almost all "standard" wxWindows headers)
// for all others, include the necessary headers
#ifndef WX_PRECOMP
#include "wx/app.h"
#include "wx/frame.h"
#include "wx/log.h"
#include "wx/textdlg.h"
#include "wx/sizer.h"
#include "wx/menu.h"
@@ -41,6 +41,13 @@
#include "wx/htmllbox.h"
// you can also have a file containing HTML strings for testing, enable this if
// you want to use it
//#define USE_HTML_FILE
#ifdef USE_HTML_FILE
#include "wx/textfile.h"
#endif
// ----------------------------------------------------------------------------
// resources
// ----------------------------------------------------------------------------
@@ -54,32 +61,46 @@
// private classes
// ----------------------------------------------------------------------------
class MyApp : public wxApp
{
public:
virtual bool OnInit();
};
// to use wxHtmlListBox you must derive a new class from it as you must
// implement pure virtual OnGetItem()
class MyHtmlListBox : public wxHtmlListBox
{
public:
MyHtmlListBox(wxWindow *parent, bool multi)
MyHtmlListBox(wxWindow *parent, bool multi = false)
: wxHtmlListBox(parent, -1, wxDefaultPosition, wxDefaultSize,
multi ? wxLB_MULTIPLE : 0)
{
SetItemCount(1000);
if ( HasMultipleSelection() )
Select(10);
else
SetSelection(10);
SetMargins(5, 5);
#ifdef USE_HTML_FILE
if ( !m_file.Open("results") )
{
wxLogError("Failed to open results file");
}
else
{
SetItemCount(m_file.GetLineCount());
}
#else
SetItemCount(10);
#endif
if ( HasMultipleSelection() )
Select(3);
else
SetSelection(3);
}
protected:
virtual wxString OnGetItem(size_t n) const
{
#ifdef USE_HTML_FILE
wxString s;
if ( m_file.IsOpened() )
s = m_file[n];
return s;
#else
int level = n % 6 + 1;
return wxString::Format(_T("<h%d><font color=#%2x%2x%2x>")
_T("Item</font> <b>%lu</b>")
@@ -89,17 +110,12 @@ protected:
abs(n - 256) % 256,
abs(n - 128) % 256,
(unsigned long)n, level);
#endif
}
virtual void OnDrawSeparator(wxDC& dc,
wxRect& rect,
size_t WXUNUSED(n)) const
{
dc.SetPen(*wxBLACK_DASHED_PEN);
dc.DrawLine(rect.x, rect.y, rect.GetRight(), rect.y);
dc.DrawLine(rect.x, rect.GetBottom(), rect.GetRight(), rect.GetBottom());
}
virtual void OnDrawSeparator(wxDC& dc, wxRect& rect, size_t n) const;
wxTextFile m_file;
};
class MyFrame : public wxFrame
@@ -112,38 +128,14 @@ public:
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
void OnLboxSelect(wxCommandEvent& event)
{
wxLogMessage(_T("Listbox selection is now %ld."), event.GetInt());
void OnSetMargins(wxCommandEvent& event);
void OnDrawSeparator(wxCommandEvent&) { m_hlbox->RefreshAll(); }
void OnToggleMulti(wxCommandEvent& event);
void OnSelectAll(wxCommandEvent& event);
if ( m_hlbox->HasMultipleSelection() )
{
wxString s;
bool first = true;
unsigned long cookie;
for ( int item = m_hlbox->GetFirstSelected(cookie);
item != wxNOT_FOUND;
item = m_hlbox->GetNextSelected(cookie) )
{
if ( first )
first = false;
else
s << _T(", ");
s << item;
}
if ( !s.empty() )
wxLogMessage(_T("Selected items: %s"), s.c_str());
}
SetStatusText(wxString::Format(
_T("# items selected = %lu"),
(unsigned long)m_hlbox->GetSelectedCount()
));
}
void OnUpdateUISelectAll(wxUpdateUIEvent& event);
void OnLboxSelect(wxCommandEvent& event);
void OnLboxDClick(wxCommandEvent& event)
{
wxLogMessage(_T("Listbox item %ld double clicked."), event.GetInt());
@@ -156,6 +148,12 @@ private:
DECLARE_EVENT_TABLE()
};
class MyApp : public wxApp
{
public:
virtual bool OnInit() { (new MyFrame())->Show(); return TRUE; }
};
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
@@ -166,6 +164,11 @@ enum
// menu items
HtmlLbox_Quit = 1,
HtmlLbox_SetMargins,
HtmlLbox_DrawSeparator,
HtmlLbox_ToggleMulti,
HtmlLbox_SelectAll,
// it is important for the id corresponding to the "About" command to have
// this standard value as otherwise it won't be handled properly under Mac
// (where it is special and put into the "Apple" menu)
@@ -176,42 +179,32 @@ enum
// event tables and other macros for wxWindows
// ----------------------------------------------------------------------------
// the event tables connect the wxWindows events with the functions (event
// handlers) which process them. It can be also done at run-time, but for the
// simple menu events like this the static method is much simpler.
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(HtmlLbox_Quit, MyFrame::OnQuit)
EVT_MENU(HtmlLbox_SetMargins, MyFrame::OnSetMargins)
EVT_MENU(HtmlLbox_DrawSeparator, MyFrame::OnDrawSeparator)
EVT_MENU(HtmlLbox_ToggleMulti, MyFrame::OnToggleMulti)
EVT_MENU(HtmlLbox_SelectAll, MyFrame::OnSelectAll)
EVT_MENU(HtmlLbox_About, MyFrame::OnAbout)
EVT_UPDATE_UI(HtmlLbox_SelectAll, MyFrame::OnUpdateUISelectAll)
EVT_LISTBOX(wxID_ANY, MyFrame::OnLboxSelect)
EVT_LISTBOX_DCLICK(wxID_ANY, MyFrame::OnLboxDClick)
END_EVENT_TABLE()
// Create a new application object: this macro will allow wxWindows to create
// the application object during program execution (it's better than using a
// static object for many reasons) and also declares the accessor function
// wxGetApp() which will return the reference of the right type (i.e. MyApp and
// not wxApp)
IMPLEMENT_APP(MyApp)
// ============================================================================
// implementation
// MyFrame
// ============================================================================
// ----------------------------------------------------------------------------
// the application class
// ----------------------------------------------------------------------------
// 'Main program' equivalent: the program execution "starts" here
bool MyApp::OnInit()
{
(new MyFrame())->Show();
return TRUE;
}
// ----------------------------------------------------------------------------
// main frame
// MyFrame ctor/dtor
// ----------------------------------------------------------------------------
// frame constructor
@@ -225,18 +218,35 @@ MyFrame::MyFrame()
#if wxUSE_MENUS
// create a menu bar
wxMenu *menuFile = new wxMenu;
menuFile->Append(HtmlLbox_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
// create our specific menu
wxMenu *menuHLbox = new wxMenu;
menuHLbox->Append(HtmlLbox_SetMargins,
_T("Set &margins...\tCtrl-G"),
_T("Change the margins around the items"));
menuHLbox->AppendCheckItem(HtmlLbox_DrawSeparator,
_T("Draw &separators\tCtrl-S"),
_T("Toggle drawing separators between cells"));
menuHLbox->AppendSeparator();
menuHLbox->AppendCheckItem(HtmlLbox_ToggleMulti,
_T("&Multiple selection\tCtrl-M"),
_T("Toggle multiple selection on/off"));
menuHLbox->AppendSeparator();
menuHLbox->Append(HtmlLbox_SelectAll, _T("Select &all items\tCtrl-A"));
// the "About" item should be in the help menu
wxMenu *helpMenu = new wxMenu;
helpMenu->Append(HtmlLbox_About, _T("&About...\tF1"), _T("Show about dialog"));
menuFile->Append(HtmlLbox_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
// now append the freshly created menu to the menu bar...
wxMenuBar *menuBar = new wxMenuBar();
menuBar->Append(menuFile, _T("&File"));
menuBar->Append(menuHLbox, _T("&Listbox"));
menuBar->Append(helpMenu, _T("&Help"));
menuBar->Check(HtmlLbox_DrawSeparator, true);
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
#endif // wxUSE_MENUS
@@ -248,7 +258,7 @@ MyFrame::MyFrame()
#endif // wxUSE_STATUSBAR
// create the child controls
m_hlbox = new MyHtmlListBox(this, true);
m_hlbox = new MyHtmlListBox(this);
wxTextCtrl *text = new wxTextCtrl(this, -1, _T(""),
wxDefaultPosition, wxDefaultSize,
wxTE_MULTILINE);
@@ -267,7 +277,10 @@ MyFrame::~MyFrame()
delete wxLog::SetActiveTarget(NULL);
}
// event handlers
// ----------------------------------------------------------------------------
// menu event handlers
// ----------------------------------------------------------------------------
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
// TRUE is to force the frame to close
@@ -284,3 +297,95 @@ void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
this);
}
void MyFrame::OnSetMargins(wxCommandEvent&)
{
long margin = wxGetNumberFromUser
(
_T("Enter the margins to use for the listbox items."),
_T("Margin: "),
_T("HtmlLbox: Set the margins"),
0, 0, 20,
this
);
if ( margin != -1 )
{
m_hlbox->SetMargins(margin, margin);
m_hlbox->RefreshAll();
}
}
void MyFrame::OnToggleMulti(wxCommandEvent& event)
{
// we need to recreate the listbox
wxSizer *sizer = GetSizer();
sizer->Detach(m_hlbox);
delete m_hlbox;
m_hlbox = new MyHtmlListBox(this, event.IsChecked());
sizer->Prepend(m_hlbox, 1, wxGROW);
sizer->Layout();
}
void MyFrame::OnSelectAll(wxCommandEvent& event)
{
m_hlbox->SelectRange(0, m_hlbox->GetItemCount() - 1);
}
void MyFrame::OnUpdateUISelectAll(wxUpdateUIEvent& event)
{
event.Enable( m_hlbox && m_hlbox->HasMultipleSelection() );
}
// ----------------------------------------------------------------------------
// listbox event handlers
// ----------------------------------------------------------------------------
void MyFrame::OnLboxSelect(wxCommandEvent& event)
{
wxLogMessage(_T("Listbox selection is now %ld."), event.GetInt());
if ( m_hlbox->HasMultipleSelection() )
{
wxString s;
bool first = true;
unsigned long cookie;
for ( int item = m_hlbox->GetFirstSelected(cookie);
item != wxNOT_FOUND;
item = m_hlbox->GetNextSelected(cookie) )
{
if ( first )
first = false;
else
s << _T(", ");
s << item;
}
if ( !s.empty() )
wxLogMessage(_T("Selected items: %s"), s.c_str());
}
SetStatusText(wxString::Format(
_T("# items selected = %lu"),
(unsigned long)m_hlbox->GetSelectedCount()
));
}
// ============================================================================
// MyHtmlListBox
// ============================================================================
void MyHtmlListBox::OnDrawSeparator(wxDC& dc, wxRect& rect, size_t) const
{
if ( ((MyFrame *)GetParent())->
GetMenuBar()->IsChecked(HtmlLbox_DrawSeparator) )
{
dc.SetPen(*wxBLACK_DASHED_PEN);
dc.DrawLine(rect.x, rect.y, rect.GetRight(), rect.y);
dc.DrawLine(rect.x, rect.GetBottom(), rect.GetRight(), rect.GetBottom());
}
}