htmledview.cpp

一个编辑网页的程序

// HTMLEdView.cpp : implementation of the CHTMLEdView class
//
// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.

#include "stdafx.h"
#include "HTMLEdit.h"

#include "HTMLEdDoc.h"
#include "htmledview.h"
#include "mainfrm.h"
#include <afxpriv.h>


#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CHTMLEdView

//Arrays for context menu

IMPLEMENT_DYNCREATE(CHTMLEdView, CHtmlEditView)
BEGIN_DHTMLEDITING_CMDMAP(CHTMLEdView)
	DHTMLEDITING_CMD_ENTRY(ID_EDIT_CUT, IDM_CUT)
	DHTMLEDITING_CMD_ENTRY(ID_EDIT_COPY, IDM_COPY)
	DHTMLEDITING_CMD_ENTRY(ID_EDIT_PASTE, IDM_PASTE)
	DHTMLEDITING_CMD_ENTRY(ID_EDIT_UNDO, IDM_UNDO)
	DHTMLEDITING_CMD_ENTRY(ID_EDIT_SELECT_ALL, IDM_SELECTALL)
	DHTMLEDITING_CMD_ENTRY(ID_EDIT_FONT, IDM_FONT)
	DHTMLEDITING_CMD_ENTRY(ID_BUTTON_INDENT, IDM_INDENT)
	DHTMLEDITING_CMD_ENTRY(ID_BUTTON_OUTDENT, IDM_OUTDENT)
	DHTMLEDITING_CMD_ENTRY(ID_BUTTON_IMAGE, IDM_IMAGE)
	DHTMLEDITING_CMD_ENTRY_FUNC(ID_FORMAT_ABSOLUTEPOSITIONELEMENT, IDM_ABSOLUTE_POSITION, SetAbsPos)
	DHTMLEDITING_CMD_ENTRY_FUNC(ID_FORMAT_STATICELEMENT, IDM_ABSOLUTE_POSITION, SetStaticPos)
	DHTMLEDITING_CMD_ENTRY_FUNC(ID_BUTTON_ABSOLUTE, IDM_ABSOLUTE_POSITION, SetAbsPos)
	DHTMLEDITING_CMD_ENTRY_FUNC(ID_BUTTON_STATIC, IDM_ABSOLUTE_POSITION, SetStaticPos)
	DHTMLEDITING_CMD_ENTRY(ID_BUTTON_HYPERLINK, IDM_HYPERLINK)
	DHTMLEDITING_CMD_ENTRY_TYPE(ID_BUTTON_BOLD, IDM_BOLD, AFX_UI_ELEMTYPE_CHECBOX)
	DHTMLEDITING_CMD_ENTRY_TYPE(ID_BUTTON_ITALIC, IDM_ITALIC, AFX_UI_ELEMTYPE_CHECBOX)
	DHTMLEDITING_CMD_ENTRY_TYPE(ID_BUTTON_UNDERLINE, IDM_UNDERLINE, AFX_UI_ELEMTYPE_CHECBOX)
	DHTMLEDITING_CMD_ENTRY_TYPE(ID_BUTTON_BULLETLIST, IDM_UNORDERLIST, AFX_UI_ELEMTYPE_CHECBOX)
	DHTMLEDITING_CMD_ENTRY_TYPE(ID_BUTTON_NUMBERLIST, IDM_ORDERLIST, AFX_UI_ELEMTYPE_CHECBOX)
	DHTMLEDITING_CMD_ENTRY_TYPE(ID_BUTTON_LEFTJUSTIFY, IDM_JUSTIFYLEFT, AFX_UI_ELEMTYPE_CHECBOX)
	DHTMLEDITING_CMD_ENTRY_TYPE(ID_BUTTON_CENTERJUSTIFY, IDM_JUSTIFYCENTER, AFX_UI_ELEMTYPE_CHECBOX)
	DHTMLEDITING_CMD_ENTRY_TYPE(ID_BUTTON_RIGHTJUSTIFY, IDM_JUSTIFYRIGHT, AFX_UI_ELEMTYPE_CHECBOX)

END_DHTMLEDITING_CMDMAP()

BEGIN_MESSAGE_MAP(CHTMLEdView, CHtmlEditView)
	ON_UPDATE_COMMAND_UI(ID_BUTTON_BLOCKFMT, OnUpdateBlockFmt)
	ON_UPDATE_COMMAND_UI(ID_BUTTON_COLOR, OnUpdateColor)
	ON_NOTIFY(TBN_DROPDOWN, AFX_IDW_TOOLBAR , OnEditBarNotify)
	ON_COMMAND_RANGE(FORMATBASE,FORMATBASE+100,OnFormatPopup)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHTMLEdView construction/destruction
void CHTMLEdView::OnUpdateBlockFmt(CCmdUI* pCmdUI)
{
	pCmdUI->Enable(QueryStatus(IDM_BLOCKFMT) & OLECMDF_ENABLED);
}

void CHTMLEdView::OnUpdateColor(CCmdUI *pCmdUI)
{
	if (QueryStatus(IDM_FORECOLOR) & OLECMDF_ENABLED)
		pCmdUI->Enable();
}

void CHTMLEdView::SetAbsPos(UINT)
{
	SetAbsolutePosition(true);
}

void CHTMLEdView::SetStaticPos(UINT)
{
	SetAbsolutePosition(false);
}

CHTMLEdView::CHTMLEdView():m_bUserMode(true),
	m_pClrMenu(NULL),
	m_pFmtMenu(NULL)
{
}

CHTMLEdView::~CHTMLEdView()
{
	if(m_pFmtMenu) delete m_pFmtMenu;
	if(m_pClrMenu) delete m_pClrMenu;
}

/////////////////////////////////////////////////////////////////////////////
// CHTMLEdView printing



/////////////////////////////////////////////////////////////////////////////
// CHTMLEdView diagnostics

#ifdef _DEBUG
void CHTMLEdView::AssertValid() const
{
	CHtmlEditView::AssertValid();
}

void CHTMLEdView::Dump(CDumpContext& dc) const
{
	CHtmlEditView::Dump(dc);
}

CHTMLEdDoc* CHTMLEdView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CHTMLEdDoc)));
	return (CHTMLEdDoc*)m_pDocument;
}
#endif //_DEBUG

//Events from the triedit control
void CHTMLEdView::OnDocumentComplete()
{
	CStringArray sa;
	GetBlockFormatNames(sa);
	//When in Source View, calling UpdateView to update the web view, causes
	//OnDocumentComplete to be fired. We check if the document is waiting for
	//this event to save itself
	if(((CHTMLEdDoc*)m_pDocument)->m_bDoSaveOnDocCom)
	{
		((CHTMLEdDoc*)m_pDocument)->m_bDoSaveOnDocCom = FALSE;
		((CHTMLEdDoc*)m_pDocument)->SaveMyDocument();

		//Since OnDocumentComplete is asynchronous, we have postponed OnNewDocument
		//till OnDocumentComplete is done, so that the old document gets saved before
		//the new one is loaded
		if(((CHTMLEdDoc*)m_pDocument)->m_bCallNewDocument)
		{
			((CHTMLEdDoc*)m_pDocument)->m_bCallNewDocument = FALSE;
			((CHTMLEdDoc*)m_pDocument)->OnNewDocument();
		}

		//Same logic as above for OnNewDocument
		if(((CHTMLEdDoc*)m_pDocument)->m_bCallCloseDocument)
		{
			((CHTMLEdDoc*)m_pDocument)->m_bCallCloseDocument = FALSE;
			((CHTMLEdDoc*)m_pDocument)->OnCloseDocument();
		}
	}
}
HRESULT CHTMLEdView::OnUpdateUI()
{
	long id = GetDlgCtrlID();
	if(id==AFX_IDW_PANE_LAST) //we change the ID if we hide this window
		return S_OK;
	if(S_OK == GetIsDirty())
		GetDocument()->SetModifiedFlag();
	UpdateFontCombos();
	AfxGetMainWnd()->PostMessage(WM_KICKIDLE);
	return S_OK;
}

HRESULT CHTMLEdView::OnShowContextMenu(DWORD /*dwID*/,
							LPPOINT ppt,
							LPUNKNOWN /*pcmdtReserved*/,
							LPDISPATCH /*pdispReserved*/)
{
	CMenu *pMenuMain = AfxGetMainWnd()->GetMenu();
	CMenu *pPopup = pMenuMain->GetSubMenu(1);

	// enable/disable items based on the status of the command
	UINT nCount = pPopup->GetMenuItemCount();
	for (UINT i = 0; i<nCount; i++)
	{
		int nID = (int)pPopup->GetMenuItemID(i);
		if (nID != 0 && nID != -1)
		{
			BOOL bHasFunc;
			UINT uiElemType;
			UINT dhtmlCmdID = GetDHtmlCommandMapping(nID, bHasFunc, uiElemType);
			long nStatus = QueryStatus(dhtmlCmdID);
			if (!(nStatus & OLECMDF_ENABLED))
			{
				pPopup->EnableMenuItem(nID, MF_DISABLED|MF_GRAYED);
			}
			else
				pPopup->EnableMenuItem(nID, MF_ENABLED);
		}
	}
	pPopup->TrackPopupMenu(TPM_LEFTALIGN, ppt->x, ppt->y, this);
	return S_OK;
}
void CHTMLEdView::OnContextMenuAction(long itemIndex)
{
	switch(itemIndex)
	{
	case 0:
		CHtmlEditView::Cut();
		break;
	case 1:
		CHtmlEditView::Copy();
		break;
	case 2:
		CHtmlEditView::Paste();
		break;
	case 4:
		CHtmlEditView::SelectAll();
		break;
	}
}

void CHTMLEdView::OnInitialUpdate() 
{
	CHtmlEditView::OnInitialUpdate();
}

void CHTMLEdView::UpdateFontCombos()
{	
	CString szResult,szCurFmt;
	int nSel;
	short nCurSize;

	CMainFrame *pFrame = (CMainFrame*)GetParentFrame();
	ASSERT_VALID(pFrame);


	//Set font face
	CComboBox *pCombo = (CComboBox*)pFrame->GetFontNameCombo();
	ASSERT_VALID(pCombo);
	pCombo->GetWindowText(szCurFmt);
	GetFontFace(szResult);
	//only update the combo it isn't in the dropped state
	//and the font name has changed
	if(!pCombo->GetDroppedState() && szCurFmt!=szResult)
	{

		nSel = pCombo->FindString(0,szResult);
		if(nSel != CB_ERR)
			pCombo->SetCurSel(nSel);
	}

	//Set font size
	pCombo = (CComboBox*)pFrame->GetFontSizeCombo();
	ASSERT_VALID(pCombo);
	short nSize = 0;
	nCurSize = 0;

	GetFontSize(nSize);
	//only update the size combo if it is not in the
	//dropped down state.
	if(!pCombo->GetDroppedState())
	{
		szResult.Empty();
		nSel = pCombo->FindString(0,_itot(nSize,szResult.GetBuffer(5),10));
		szResult.ReleaseBuffer();
		if(nSel != CB_ERR)
			pCombo->SetCurSel(nSel);
	}
}

void CHTMLEdView::OnEditBarNotify(NMHDR* pNMHDR, LRESULT* /*pResult*/)
{

	TBNOTIFY* pTBNotify = (TBNOTIFY*) pNMHDR;

	switch(pTBNotify->iItem)
	{
	case ID_BUTTON_BLOCKFMT:
		PopBlockFmtMenu();
		break;

	case ID_BUTTON_COLOR:
		PopColorMenu();
		break;

	default:
		break;
	}
}

void CHTMLEdView::PopBlockFmtMenu()
{
	//re-create the popup menu every time through here
	//in case block formats change.
	if(!m_pFmtMenu)
	{
		m_pFmtMenu = new CFormatMenu;
		if(m_pFmtMenu)
		{
			if(!m_pFmtMenu->CreatePopupMenu())
				return;
		}
		else
			return;

	}
	else
	{
		m_pFmtMenu->DestroyMenu();
		if(!m_pFmtMenu->CreatePopupMenu())
			return;
	}
	
	m_pFmtMenu->ClearStringArray();
	CStringArray &ar = m_pFmtMenu->GetStringArray();
	CString curFmt;

	if(!SUCCEEDED(GetBlockFormatNames(ar)) || !SUCCEEDED(GetBlockFormat(curFmt)) )
		return;
	int nFlags;
	int arSz = (int)ar.GetSize();
	for(int i = 0; i < arSz; i++)
	{
		nFlags = MF_STRING|MF_ENABLED;
		if(ar[i] == curFmt)
			nFlags |= MF_CHECKED;
		m_pFmtMenu->AppendMenu(nFlags,FORMATBASE+i,ar[i]);
	}

	//get the rect for menu
	CMainFrame *pFrame = (CMainFrame*)GetParentFrame();
	ASSERT_VALID(pFrame);
	CRect rc;
	pFrame->m_wndEditBar.GetItemRect(2,rc);
	pFrame->m_wndEditBar.ClientToScreen(rc);

	m_pFmtMenu->TrackPopupMenu(TPM_LEFTALIGN|TPM_LEFTBUTTON,
								rc.left+3,rc.bottom,this);

}			
void CHTMLEdView::OnFormatPopup(UINT nCommandID)
{
	//format popup menu was hit
	//calculate the index into the format menu's string array
	int nIndex = nCommandID-FORMATBASE;
	CStringArray &sa = m_pFmtMenu->GetStringArray();
	SetBlockFormat(sa[nIndex]);
}


UINT CALLBACK CdlgHook(  HWND hdlg,UINT uiMsg,WPARAM /*wParam*/, LPARAM lParam)
{
	if(uiMsg == WM_INITDIALOG)
	{
		CHOOSECOLOR *pcc = (CHOOSECOLOR*)lParam;
		CRect *rc = (CRect*)pcc->lCustData;
		if(rc)
			SetWindowPos(hdlg,HWND_TOP,rc->right,rc->bottom,
			0,0,SWP_NOZORDER|SWP_NOSIZE);
		SetWindowText(hdlg, _T("Choose a Foreground Color"));
		delete rc;
	}
	return 0;
}
void CHTMLEdView::PopColorMenu()
{
	//get the rect for menu
	CMainFrame *pFrame = (CMainFrame*)GetParentFrame();
	ASSERT_VALID(pFrame);
	CRect *prc = new CRect;
	if(!prc) return;

	pFrame->m_wndEditBar.GetItemRect(6,prc);
	pFrame->m_wndEditBar.ClientToScreen(prc);

	CColorDialog dlg;
	dlg.m_cc.Flags |= CC_ENABLEHOOK;
	dlg.m_cc.lpfnHook = CdlgHook;
	dlg.m_cc.lCustData = (LONG_PTR)prc;

	if(dlg.DoModal()==IDOK)
	{
		CString szColor;
		COLORREF cr = dlg.GetColor();

		//change the COLORREF into an RGB.
		szColor.Format(_T("%.2x%.2x%.2x"),GetRValue(cr),GetGValue(cr),GetBValue(cr));
		SetForeColor(szColor);
	}
}

void CHTMLEdView::OnActivateView(BOOL bActivate, CView* pActivateView, CView* pDeactiveView) 
{

	if(bActivate && pActivateView==this && pDeactiveView != this)
	{
		//we're being activated get the HTML from the WebView
		UpdateView();
	}
	
	CHtmlEditView::OnActivateView(bActivate, pActivateView, pDeactiveView);
}

void CHTMLEdView::UpdateView()
{
	CMainFrame *pFrame = (CMainFrame*)AfxGetMainWnd();
	ASSERT_VALID(pFrame);

	CSourceView* pSrcView = (CSourceView*)pFrame->GetSourceView();
	ASSERT_VALID(pSrcView);
	CString szHTML;
	pSrcView->GetWindowText(szHTML);
	if(szHTML.GetLength() > 0)
		SetDocumentHTML(szHTML);
}