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Replace incorrect uses of wxString::empty() with the intended clear().
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1/////////////////////////////////////////////////////////////////////////////
2// Name: src/generic/collpaneg.cpp
3// Purpose: wxGenericCollapsiblePane
4// Author: Francesco Montorsi
5// Modified By:
6// Created: 8/10/2006
7// Id: $Id$
8// Copyright: (c) Francesco Montorsi
9// Licence: wxWindows licence
10/////////////////////////////////////////////////////////////////////////////
11
12
13// ----------------------------------------------------------------------------
14// headers
15// ----------------------------------------------------------------------------
16
17// For compilers that support precompilation, includes "wx.h".
18#include "wx/wxprec.h"
19
20#ifdef __BORLANDC__
21 #pragma hdrstop
22#endif
23
24#include "wx/defs.h"
25
26#if wxUSE_COLLPANE && wxUSE_BUTTON && wxUSE_STATLINE
27
28#include "wx/collpane.h"
29
30#ifndef WX_PRECOMP
31 #include "wx/toplevel.h"
32 #include "wx/button.h"
33 #include "wx/sizer.h"
34 #include "wx/panel.h"
35#endif // !WX_PRECOMP
36
37#include "wx/statline.h"
38
39// ----------------------------------------------------------------------------
40// constants
41// ----------------------------------------------------------------------------
42
43// ============================================================================
44// implementation
45// ============================================================================
46
47const char wxCollapsiblePaneNameStr[] = "collapsiblePane";
48
49//-----------------------------------------------------------------------------
50// wxGenericCollapsiblePane
51//-----------------------------------------------------------------------------
52
53wxDEFINE_EVENT( wxEVT_COMMAND_COLLPANE_CHANGED, wxCollapsiblePaneEvent );
54IMPLEMENT_DYNAMIC_CLASS(wxGenericCollapsiblePane, wxControl)
55IMPLEMENT_DYNAMIC_CLASS(wxCollapsiblePaneEvent, wxCommandEvent)
56
57BEGIN_EVENT_TABLE(wxGenericCollapsiblePane, wxControl)
58 EVT_BUTTON(wxID_ANY, wxGenericCollapsiblePane::OnButton)
59 EVT_SIZE(wxGenericCollapsiblePane::OnSize)
60END_EVENT_TABLE()
61
62void wxGenericCollapsiblePane::Init()
63{
64 m_pButton = NULL;
65 m_pPane = NULL;
66 m_pStaticLine = NULL;
67 m_sz = NULL;
68}
69
70bool wxGenericCollapsiblePane::Create(wxWindow *parent,
71 wxWindowID id,
72 const wxString& label,
73 const wxPoint& pos,
74 const wxSize& size,
75 long style,
76 const wxValidator& val,
77 const wxString& name)
78{
79 if ( !wxControl::Create(parent, id, pos, size, style, val, name) )
80 return false;
81
82 m_strLabel = label;
83
84 // sizer containing the expand button and possibly a static line
85 m_sz = new wxBoxSizer(wxHORIZONTAL);
86
87#if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
88 // on Mac we use the special disclosure triangle button
89 m_pStaticLine = NULL;
90 m_pButton = new wxDisclosureTriangle(this, wxID_ANY, GetBtnLabel());
91 m_sz->Add(m_pButton);
92#else
93 // create children and lay them out using a wxBoxSizer
94 // (so that we automatically get RTL features)
95 m_pButton = new wxButton(this, wxID_ANY, GetBtnLabel(), wxPoint(0, 0),
96 wxDefaultSize, wxBU_EXACTFIT);
97 m_pStaticLine = new wxStaticLine(this, wxID_ANY);
98
99 // on other platforms we put the static line and the button horizontally
100 m_sz->Add(m_pButton, 0, wxLEFT|wxTOP|wxBOTTOM, GetBorder());
101 m_sz->Add(m_pStaticLine, 1, wxALIGN_CENTER|wxLEFT|wxRIGHT, GetBorder());
102#endif
103
104 // FIXME: at least under wxCE and wxGTK1 the background is black if we don't do
105 // this, no idea why...
106#if defined(__WXWINCE__) || defined(__WXGTK__)
107 SetBackgroundColour(parent->GetBackgroundColour());
108#endif
109
110 // do not set sz as our sizers since we handle the pane window without using sizers
111 m_pPane = new wxPanel(this, wxID_ANY, wxDefaultPosition, wxDefaultSize,
112 wxTAB_TRAVERSAL|wxNO_BORDER, wxT("wxCollapsiblePanePane") );
113
114 // start as collapsed:
115 m_pPane->Hide();
116
117 return true;
118}
119
120wxGenericCollapsiblePane::~wxGenericCollapsiblePane()
121{
122 if (m_pButton)
123 m_pButton->SetContainingSizer(NULL);
124
125 if (m_pStaticLine)
126 m_pStaticLine->SetContainingSizer(NULL);
127
128 // our sizer is not deleted automatically since we didn't use SetSizer()!
129 wxDELETE(m_sz);
130}
131
132wxSize wxGenericCollapsiblePane::DoGetBestSize() const
133{
134 // NB: do not use GetSize() but rather GetMinSize()
135 wxSize sz = m_sz->GetMinSize();
136
137 // when expanded, we need more vertical space
138 if ( IsExpanded() )
139 {
140 sz.SetWidth(wxMax( sz.GetWidth(), m_pPane->GetBestSize().x ));
141 sz.SetHeight(sz.y + GetBorder() + m_pPane->GetBestSize().y);
142 }
143
144 return sz;
145}
146
147wxString wxGenericCollapsiblePane::GetBtnLabel() const
148{
149 // on mac the triangle indicates the state, no string change
150#ifdef __WXMAC__
151 return m_strLabel;
152#else
153 return m_strLabel + (IsCollapsed() ? wxT(" >>") : wxT(" <<"));
154#endif
155}
156
157void wxGenericCollapsiblePane::OnStateChange(const wxSize& sz)
158{
159 // minimal size has priority over the best size so set here our min size
160// SetMinSize(sz);
161 SetSize(sz);
162
163 if (this->HasFlag(wxCP_NO_TLW_RESIZE))
164 {
165 // the user asked to explicitly handle the resizing itself...
166 return;
167 }
168
169
170 wxTopLevelWindow *top =
171 wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
172 if ( !top )
173 return;
174
175 wxSizer *sizer = top->GetSizer();
176 if ( !sizer )
177 return;
178
179 const wxSize newBestSize = sizer->ComputeFittingClientSize(top);
180 top->SetMinClientSize(newBestSize);
181
182 // we shouldn't attempt to resize a maximized window, whatever happens
183 if ( !top->IsMaximized() )
184 top->SetClientSize(newBestSize);
185}
186
187void wxGenericCollapsiblePane::Collapse(bool collapse)
188{
189 // optimization
190 if ( IsCollapsed() == collapse )
191 return;
192
193 // update our state
194 m_pPane->Show(!collapse);
195
196 // update button label
197#if defined( __WXMAC__ ) && !defined(__WXUNIVERSAL__)
198 m_pButton->SetOpen( !collapse );
199#else
200 // NB: this must be done after updating our "state"
201 m_pButton->SetLabel(GetBtnLabel());
202#endif
203
204
205 OnStateChange(GetBestSize());
206}
207
208void wxGenericCollapsiblePane::SetLabel(const wxString &label)
209{
210 m_strLabel = label;
211#ifdef __WXMAC__
212 m_pButton->SetLabel(GetBtnLabel());
213#else
214 m_pButton->SetLabel(GetBtnLabel());
215 m_pButton->SetInitialSize();
216#endif
217
218 Layout();
219}
220
221bool wxGenericCollapsiblePane::Layout()
222{
223#ifdef __WXMAC__
224 if (!m_pButton || !m_pPane || !m_sz)
225 return false; // we need to complete the creation first!
226#else
227 if (!m_pButton || !m_pStaticLine || !m_pPane || !m_sz)
228 return false; // we need to complete the creation first!
229#endif
230
231 wxSize oursz(GetSize());
232
233 // move & resize the button and the static line
234 m_sz->SetDimension(0, 0, oursz.GetWidth(), m_sz->GetMinSize().GetHeight());
235 m_sz->Layout();
236
237 if ( IsExpanded() )
238 {
239 // move & resize the container window
240 int yoffset = m_sz->GetSize().GetHeight() + GetBorder();
241 m_pPane->SetSize(0, yoffset,
242 oursz.x, oursz.y - yoffset);
243
244 // this is very important to make the pane window layout show correctly
245 m_pPane->Layout();
246 }
247
248 return true;
249}
250
251int wxGenericCollapsiblePane::GetBorder() const
252{
253#if defined( __WXMAC__ )
254 return 6;
255#elif defined(__WXMSW__)
256 wxASSERT(m_pButton);
257 return m_pButton->ConvertDialogToPixels(wxSize(2, 0)).x;
258#else
259 return 5;
260#endif
261}
262
263
264
265//-----------------------------------------------------------------------------
266// wxGenericCollapsiblePane - event handlers
267//-----------------------------------------------------------------------------
268
269void wxGenericCollapsiblePane::OnButton(wxCommandEvent& event)
270{
271 if ( event.GetEventObject() != m_pButton )
272 {
273 event.Skip();
274 return;
275 }
276
277 Collapse(!IsCollapsed());
278
279 // this change was generated by the user - send the event
280 wxCollapsiblePaneEvent ev(this, GetId(), IsCollapsed());
281 GetEventHandler()->ProcessEvent(ev);
282}
283
284void wxGenericCollapsiblePane::OnSize(wxSizeEvent& WXUNUSED(event))
285{
286#if 0 // for debug only
287 wxClientDC dc(this);
288 dc.SetPen(*wxBLACK_PEN);
289 dc.SetBrush(*wxTRANSPARENT_BRUSH);
290 dc.DrawRectangle(wxPoint(0,0), GetSize());
291 dc.SetPen(*wxRED_PEN);
292 dc.DrawRectangle(wxPoint(0,0), GetBestSize());
293#endif
294
295 Layout();
296}
297
298#endif // wxUSE_COLLPANE && wxUSE_BUTTON && wxUSE_STATLINE