void CMainFrame::OnViewChange(UINT nCmdID)
// There is an ON_COMMAND_RANGE message map entry associated with
// OnViewChange:
// ON_COMMAND_RANGE(ID_VIEW_CHANGE1, ID_VIEW_CHANGE2, &OnViewChange)
{
CView* pViewAdd;
CView* pViewRemove;
CDocument* pDoc = GetActiveDocument();
// cvView1 and cvView2 are enum members defined in my CMainFrame class
if((nCmdID == ID_VIEW_CHANGE1) && (m_currentView == cvView1))
return;
if((nCmdID == ID_VIEW_CHANGE2) && (m_currentView == cvView2))
return;
if (nCmdID == ID_VIEW_CHANGE2)
{
if (m_pView2 == NULL)
{
m_pView1 = GetActiveView();
m_pView2 = new CMyView2;
//Note that if OnSize has been overridden in CMyView2
//and GetDocument() is used in this override it can
//cause assertions and, if the assertions are ignored,
//cause access violation.
m_pView2->Create(NULL, NULL, AFX_WS_DEFAULT_VIEW, rectDefault, this,
AFX_IDW_PANE_FIRST + 1, NULL);
}
pViewAdd = m_pView2;
pViewRemove = m_pView1;
m_currentView = cvView2;
}
else
{
pViewAdd = m_pView1;
pViewRemove = m_pView2;
m_currentView = cvView1;
}
// Set the child i.d. of the active view to AFX_IDW_PANE_FIRST,
// so that CFrameWnd::RecalcLayout will allocate to this
// "first pane" that portion of the frame window's client area
// not allocated to control bars. Set the child i.d. of the
// other view to anything other than AFX_IDW_PANE_FIRST; this
// examples switches the child id's of the two views.
int nSwitchChildID = pViewAdd->GetDlgCtrlID();
pViewAdd->SetDlgCtrlID(AFX_IDW_PANE_FIRST);
pViewRemove->SetDlgCtrlID(nSwitchChildID);
// Show the newly active view and hide the inactive view.
pViewAdd->ShowWindow(SW_SHOW);
pViewRemove->ShowWindow(SW_HIDE);
// Connect the newly active view to the document, and
// disconnect the inactive view.
pDoc->AddView(pViewAdd);
pDoc->RemoveView(pViewRemove);
SetActiveView(pViewAdd);
RecalcLayout();
}
/////////////////////////////////////////////////////////////////////////////
// switch to the new selected view tab
/////////////////////////////////////////////////////////////////////////////
BOOL CBonfireDoc::SwitchToView(CString strTab)
{
if (strTab == "")
return FALSE;
CChildFrame* pChild = (CChildFrame*)g_pMainFrame->MDIGetActive();
if (!pChild || pChild->GetActiveDocument() != this)
{
POSITION pos = GetFirstViewPosition();
pChild = (CChildFrame*)GetNextView(pos)->GetParentFrame();
}
if (!pChild)
return FALSE;
CView* pViewAdd = NULL;
CBonfireView* pGlobalView = NULL;
CBonfireView* pBNewView = NULL;
// get the view to "hide"
CView* pViewDel = pChild->GetActiveView();
// if we're already displaying this kind of view, no need to go further.
for (int i = 0; i < theApp.m_arAllViews.GetSize(); i++)
{
if ( ((CBonfireView*)theApp.m_arAllViews[i])->m_strCaption.Compare(strTab) == 0 )
{
pGlobalView = (CBonfireView*)theApp.m_arAllViews[i];
break;
}
}
if ( pViewDel && pViewDel->IsKindOf(pGlobalView->m_pClass) )
return TRUE;
// check if a view of this type already exists
if ( !m_pViews->Lookup(pGlobalView->m_strCaption, (void*&)pBNewView) )
{
// doesn't exist so create a new view
pViewAdd = (CView*)pGlobalView->m_pClass->CreateObject();
if (pViewAdd == NULL)
{
TRACE1("Warning: Dynamic create of view type %Fs failed\n", pGlobalView->m_pClass->m_lpszClassName);
return FALSE;
}
// draw new view
CCreateContext context;
context.m_pNewViewClass = pGlobalView->m_pClass;
context.m_pCurrentDoc = NULL;
context.m_pNewDocTemplate = this->GetDocTemplate();
context.m_pLastView = NULL;
context.m_pCurrentFrame = pChild;
// draw new view
if (!pViewAdd->Create(NULL, NULL, AFX_WS_DEFAULT_VIEW, CRect(0, 0, 0, 0),
pChild, AFX_IDW_PANE_FIRST, &context))
{
TRACE0("Warning: couldn't create view for frame\n");
delete pViewAdd;
return FALSE;
}
// add the view to the map
pBNewView = new CBonfireView(pGlobalView);
pBNewView->m_pView = pViewAdd;
pBNewView->m_pClass = pViewAdd->GetRuntimeClass();
// add this view to the document's map
AddViewToMap(pBNewView);
// WM_INITIALUPDATE is defined in afxpriv.h
pViewAdd->SendMessage(WM_INITIALUPDATE,0,0);
// connect the view to the document
AddView(pViewAdd);
}
else
{
pViewAdd = pBNewView->m_pView;
}
// save file on switching views
if (theApp.m_opOptions.general.dwSaveOnSwitch && !m_xTextBuffer.GetReadOnly() && pViewDel)
DoFileSave();
CSplitterWnd* pSplitter = NULL;
POSITION pos = GetFirstViewPosition();
BOOL firstOne = true;
while (pos)
{
CView* pv = GetNextView(pos);
if (pv == pViewAdd)
{
pv->SetDlgCtrlID(AFX_IDW_PANE_FIRST);
// show the view
if (pBNewView->m_bAllowsSplitter)
{
pSplitter = (CSplitterWnd*)pViewAdd->GetParent();
// show the splitter (show the children view(s) as well)
pSplitter->ShowWindow(SW_SHOW);
}
else
// show the view
pViewAdd->ShowWindow(SW_SHOW);
}
else
{
// check if the view is inside a splitter
if (pv->GetParent()->GetRuntimeClass() == (CRuntimeClass*)RUNTIME_CLASS(CSplitterWnd))
{
pSplitter = (CSplitterWnd*)pv->GetParent();
// hide the splitter (hide all views with the splitter)
pSplitter->ShowWindow(SW_HIDE);
}
else
{
// hide the view
pv->ShowWindow(SW_HIDE);
pv->SetDlgCtrlID(AFX_IDW_PANE_FIRST + 255);
}
}
TRACE("%s (%d) ", pv->GetRuntimeClass()->m_lpszClassName, (unsigned)(pv->GetDlgCtrlID() - AFX_IDW_PANE_FIRST));
if (pv == pViewDel) TRACE("= D ");
if (pv == pViewAdd) TRACE("= A ");
if (pv->GetRuntimeClass() == pGlobalView->m_pClass)
{
if (firstOne)
firstOne = false;
else
TRACE("removing ");
}
}
TRACE("\n");
// get rid of extra views created by the splitter
if (pSplitter)
{
for (int cols = 1; cols < pSplitter->GetColumnCount(); cols++)
pSplitter->DeleteColumn(cols);
for (int rows = 1; rows < pSplitter->GetRowCount(); rows++)
pSplitter->DeleteRow(rows);
pSplitter->RecalcLayout();
}
pViewAdd->UpdateWindow();
pChild->SetActiveView(pViewAdd);
pChild->RecalcLayout();
if (pBNewView->m_bModifiedSinceRefresh)
{
pBNewView->m_bModifiedSinceRefresh = FALSE;
if (pGlobalView->m_pClass == RUNTIME_CLASS(CXMLTreeView))
{
((CXMLTreeView*)pViewAdd)->RefreshView();
}
else if (pGlobalView->m_pClass == RUNTIME_CLASS(CBrowserView))
{
((CBrowserView*)pViewAdd)->RefreshView();
}
else
{
pBNewView->m_bModifiedSinceRefresh = TRUE;
}
}
return TRUE;
}