xmlviewerdlg.cpp

Visual_C++[1].NET_Bible1 Visual_C++宝典书中的全部源码

// XMLViewerDlg.cpp : implementation file
//

#include "stdafx.h"
#include "XMLViewer.h"
#include "XMLViewerDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	enum { IDD = IDD_ABOUTBOX };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

// Implementation
protected:
	DECLARE_MESSAGE_MAP()
public:
  afx_msg void OnBnClickedOk();
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
  ON_BN_CLICKED(IDOK, OnBnClickedOk)
END_MESSAGE_MAP()


// CXMLViewerDlg dialog



CXMLViewerDlg::CXMLViewerDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CXMLViewerDlg::IDD, pParent)
    , m_strDocName(_T(""))
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CXMLViewerDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    DDX_Text(pDX, IDC_STC_DOC_NAME, m_strDocName);
    DDX_Control(pDX, IDC_TREE_DOC_CONTENTS, m_treeDocContents);
}

BEGIN_MESSAGE_MAP(CXMLViewerDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
    ON_BN_CLICKED(IDOK, OnBnClickedOpenDoc)
    ON_BN_CLICKED(IDC_BUTTON1, OnBnClickedExpandAll)
    ON_BN_CLICKED(IDC_BUTTON2, OnBnClickedCollapseAll)
    ON_BN_CLICKED(IDC_BUTTON3, OnBnClickedButton3)
END_MESSAGE_MAP()


// CXMLViewerDlg message handlers

BOOL CXMLViewerDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon

  // Initialize COM
  ::CoInitialize(NULL);

  HRESULT hr = m_plDomDocument.CreateInstance(MSXML::CLSID_DOMDocument);
  if (FAILED(hr))
  {
     _com_error er(hr);
     AfxMessageBox(er.ErrorMessage());
     EndDialog(1);
  }

  return TRUE;  
}

void CXMLViewerDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CXMLViewerDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this function to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CXMLViewerDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}

void CXMLViewerDlg::OnBnClickedOpenDoc()
{
  // Display file open dialog and let user specify 
  // XML file.
  CFileDialog fileDlg(TRUE);
  fileDlg.m_ofn.lpstrFilter = "XML Documents (*.XML)\0*.xml\0\0";
  if (IDOK == fileDlg.DoModal())
  {
    m_strDocName = fileDlg.GetPathName();
    m_treeDocContents.DeleteAllItems();
    UpdateData(FALSE); // <-- Just in case we don't get anything

        // specify xml file name
    CString strFileName(m_strDocName);

    // convert xml file name string to something 
    // COM can handle (BSTR)
    _bstr_t bstrFileName;
    bstrFileName = strFileName.AllocSysString();

    // call the IXMLDOMDocumentPtr's load function 
    // to load the XML document
    variant_t vResult;
    vResult = m_plDomDocument->load(bstrFileName);

    if (((bool)vResult) == TRUE) // success!
    {
            m_pDocRoot = m_plDomDocument->documentElement;
            DisplayChildren(TVI_ROOT, m_pDocRoot);
            if (0 == m_treeDocContents.GetCount())
            {
                m_treeDocContents.InsertItem("Empty document");
            }
            else
            {
                OnBnClickedExpandAll();
            }
    }
    else
    {
        m_treeDocContents.InsertItem("Document FAILED to load!");
    }

    UpdateData(FALSE);
  }
}

void CXMLViewerDlg::DisplayChildren(HTREEITEM hParent, MSXML::IXMLDOMNodePtr pParent)
{
    // display the current node's name
    HTREEITEM hItem = DisplayChild(hParent, pParent);

    // simple for loop to get all children
    for (MSXML::IXMLDOMNodePtr pChild = pParent->firstChild;
        NULL != pChild;
        pChild = pChild->nextSibling)
    {
        // for each child, call this function so that we get 
        // its children as well
        DisplayChildren(hItem, pChild);
    }
}

HTREEITEM CXMLViewerDlg::DisplayChild(HTREEITEM hParent, MSXML::IXMLDOMNodePtr pChild)
{
  // Determine the node type and based on that type
  // retrieve the value we want in the treeview
  CString strElement;
  if (MSXML::NODE_TEXT == pChild->nodeType)
  {
    strElement = (LPCTSTR)pChild->text;
  }
  else
  {
    strElement = (LPCTSTR)pChild->nodeName;
  }
     
  // Add the element抯 node name to the treeview 
  // and return the hItem.
  return m_treeDocContents.InsertItem(strElement, hParent);
}

void CXMLViewerDlg::OnBnClickedExpandAll()
{
    HTREEITEM hItem = m_treeDocContents.GetRootItem();
    ExpandBranch(hItem);
    m_treeDocContents.Select(hItem, TVGN_FIRSTVISIBLE);

}

void CXMLViewerDlg::OnBnClickedCollapseAll()
{
    ExpandBranch(m_treeDocContents.GetRootItem(), FALSE);
}

void CXMLViewerDlg::ExpandBranch(HTREEITEM hItem, BOOL bExpand /* = TRUE */)
{
    if (m_treeDocContents.ItemHasChildren(hItem))
    {
        m_treeDocContents.Expand(hItem, bExpand ? TVE_EXPAND : TVE_COLLAPSE);
        hItem = m_treeDocContents.GetChildItem(hItem);
        do{
            ExpandBranch(hItem);
        } while ((hItem = m_treeDocContents.GetNextSiblingItem(hItem)) != NULL);
    }
}

void CXMLViewerDlg::OnBnClickedButton3()
{
  CAboutDlg().DoModal();
}

void CAboutDlg::OnBnClickedOk()
{
  CWaitCursor wait;

  CString strUrl = "http://www.thecodechannel.com/redirect.asp?u=/&s=vcnb";
  if (32 >= (int)ShellExecute(NULL, "open", strUrl, NULL, NULL, SW_SHOWNORMAL))
  {
    AfxMessageBox("::ShellExecute failed to open this link!");
  }
}