oleclientsite.java

源码为Eclipse开源开发平台桌面开发工具SWT的源代码,

protected int Release() {
	refCount--;
	
	if (refCount == 0) {
		disposeCOMInterfaces();
	}
	return refCount;
}
protected void releaseObjectInterfaces() {

	if (objIOleInPlaceObject!= null)
		objIOleInPlaceObject.Release();
	objIOleInPlaceObject = null;
	
	if (objIOleObject != null) {	
		objIOleObject.Close(COM.OLECLOSE_NOSAVE);
		objIOleObject.Release();
	}
	objIOleObject = null;
	
	if (objDocumentView != null){
		objDocumentView.Release();
	}
	objDocumentView = null;
	
	if (objIViewObject2 != null) {
		objIViewObject2.SetAdvise(aspect, 0, 0);
		objIViewObject2.Release();
	}
	objIViewObject2 = null;
	
	if (objIOleCommandTarget != null)
		objIOleCommandTarget.Release();
	objIOleCommandTarget = null;
		
	if (objIUnknown != null){
		objIUnknown.Release();
	}
	objIUnknown = null;
	
	COM.CoFreeUnusedLibraries();
}
public boolean save(File file, boolean includeOleInfo) {
	if (includeOleInfo)
		return saveToStorageFile(file);
	return saveToTraditionalFile(file);
}
private boolean saveFromContents(int address, File file) {

	boolean success = false;
	
	IStream tempContents = new IStream(address);
	tempContents.AddRef();

	try {
		FileOutputStream writer = new FileOutputStream(file);
		
		int increment = 1024 * 4;
		int pv = COM.CoTaskMemAlloc(increment);
		int[] pcbWritten = new int[1];
		while (tempContents.Read(pv, increment, pcbWritten) == COM.S_OK && pcbWritten[0] > 0) {
			byte[] buffer = new byte[ pcbWritten[0]];
			OS.MoveMemory(buffer, pv, pcbWritten[0]);
			writer.write(buffer); // Note: if file does not exist, this will create the file the 
			                      // first time it is called
			success = true;
		}
		COM.CoTaskMemFree(pv);
			
		writer.close();
		
	} catch (IOException err) {
	}

	tempContents.Release();

	return success;
}
private boolean saveFromOle10Native(int address, File file) {

	boolean success = false;
	
	IStream tempContents = new IStream(address);
	tempContents.AddRef();
	
	// The "\1Ole10Native" stream contains a DWORD header whose value is the length 
	// of the native data that follows.
	int pv = COM.CoTaskMemAlloc(4);
	int[] size = new int[1];
	int rc = tempContents.Read(pv, 4, null);
	OS.MoveMemory(size, pv, 4);
	COM.CoTaskMemFree(pv);
	if (rc == COM.S_OK && size[0] > 0) {
		
		// Read the data
		byte[] buffer = new byte[size[0]];
		pv = COM.CoTaskMemAlloc(size[0]);
		rc = tempContents.Read(pv, size[0], null);
		OS.MoveMemory(buffer, pv, size[0]);
		COM.CoTaskMemFree(pv);

		// open the file and write data into it
		try {
			FileOutputStream writer = new FileOutputStream(file);
			writer.write(buffer); // Note: if file does not exist, this will create the file
			writer.close();

			success = true;
		} catch (IOException err) {
		}
	}
	tempContents.Release();

	return success;
}
private int SaveObject() {

	updateStorage();
		
	return COM.S_OK;
}
/**
 * Saves the document to the specified file and includes OLE spcific inforrmation.  This method 
 * must <b>only</b> be used for files that have an OLE Storage format.  For example, a word file 
 * edited with Word.Document should be saved using this method because there is formating information
 * that should be stored in the OLE specific Storage format.
 *
 * @param file the file to which the changes are to be saved
 *
 * @return true if the save was successful
 */
private boolean saveToStorageFile(File file) {
	// The file will be saved using the formating of the current application - this
	// may not be the format of the application that was originally used to create the file
	// e.g. if an Excel file is opened in Word, the Word application will save the file in the 
	// Word format
	// Note: if the file already exists, some applications will not overwrite the file
	// In these cases, you should delete the file first (probably save the contents of the file in case the
	// save fails)
	if (file == null || file.isDirectory()) return false;
	if (!updateStorage()) return false;
	
	// get access to the persistant storage mechanism
	int[] address = new int[1];
	if (objIOleObject.QueryInterface(COM.IIDIPersistStorage, address) != COM.S_OK) return false;
	IPersistStorage permStorage = new IPersistStorage(address[0]);
	try {
		address = new int[1];
		char[] path = (file.getAbsolutePath()+"\0").toCharArray();
		int mode = COM.STGM_TRANSACTED | COM.STGM_READWRITE | COM.STGM_SHARE_EXCLUSIVE | COM.STGM_CREATE;
		int result = COM.StgCreateDocfile(path, mode, 0, address); //Does an AddRef if successful
		if (result != COM.S_OK) return false;
		IStorage storage =  new IStorage(address[0]);
		try {
			if (COM.OleSave(permStorage.getAddress(), storage.getAddress(), false) == COM.S_OK) {
				if (storage.Commit(COM.STGC_DEFAULT) == COM.S_OK) {
					return true;
				}
			}
		} finally {
			storage.Release();
		}
	} finally {
		permStorage.Release();
	}
	return false;
}
/**
 * Saves the document to the specified file.  This method must be used for
 * files that do not have an OLE Storage format.  For example, a bitmap file edited with MSPaint 
 * should be saved using this method because bitmap is a standard format that does not include any
 * OLE specific data.
 *
 * @param file the file to which the changes are to be saved
 *
 * @return true if the save was successful
 */
private boolean saveToTraditionalFile(File file) {
	// Note: if the file already exists, some applications will not overwrite the file
	// In these cases, you should delete the file first (probably save the contents of the file in case the
	// save fails)
	if (file == null || file.isDirectory())
		return false;
	if (!updateStorage())
		return false;
	
	int[] address = new int[1];
	// Look for a CONTENTS stream
	if (tempStorage.OpenStream("CONTENTS", 0, COM.STGM_DIRECT | COM.STGM_READ | COM.STGM_SHARE_EXCLUSIVE, 0, address) == COM.S_OK) //$NON-NLS-1$
		return saveFromContents(address[0], file);
		
	// Look for Ole 1.0 object stream
	if (tempStorage.OpenStream("\1Ole10Native", 0, COM.STGM_DIRECT | COM.STGM_READ | COM.STGM_SHARE_EXCLUSIVE, 0, address) == COM.S_OK) //$NON-NLS-1$
		return saveFromOle10Native(address[0], file);
		
	return false;
}
private int Scroll(int scrollExtant) {
	return COM.S_OK;
}
void setBorderSpace(RECT newBorderwidth) {
	borderWidths = newBorderwidth;
	// readjust size and location of client site
	Rectangle area = frame.getClientArea();
	setBounds(borderWidths.left, borderWidths.top, 
				area.width - borderWidths.left - borderWidths.right, 
				area.height - borderWidths.top - borderWidths.bottom);
	setObjectRects();
}
private void setExtent(int width, int height){
	// Resize the width and height of the embedded/linked OLENatives object
	// to the specified values.

	if (objIOleObject == null || isStatic || inUpdate) return;
	SIZE currentExtent = getExtent();
	if (width == currentExtent.cx && height == currentExtent.cy) return;

	SIZE newExtent = new SIZE();
	newExtent.cx = width; newExtent.cy = height;
	newExtent = xFormPixelsToHimetric(newExtent);
	
   // Get the server running first, then do a SetExtent, then show it
	boolean alreadyRunning = COM.OleIsRunning(objIOleObject.getAddress());
	if (!alreadyRunning)
		COM.OleRun(objIOleObject.getAddress());
	
	if (objIOleObject.SetExtent(aspect, newExtent) == COM.S_OK){
		inUpdate = true;
		objIOleObject.Update();
		inUpdate = false;
		if (!alreadyRunning)
			// Close server if it wasn't already running upon entering this method.
			objIOleObject.Close(COM.OLECLOSE_SAVEIFDIRTY);
	}
}
public void setIndent(Rectangle newIndent) {
	indent = new RECT();
	indent.left = newIndent.x;
	indent.right = newIndent.width;
	indent.top = newIndent.y;
	indent.bottom = newIndent.height;
}
private void setObjectRects() {
	if (objIOleInPlaceObject == null) return;	
	// size the object to fill the available space
	// leave a border
	RECT rect = getRect();
	objIOleInPlaceObject.SetObjectRects(rect, rect);
}

private int ShowObject() {
	/* Tells the container to position the object so it is visible to 
	 * the user. This method ensures that the container itself is 
	 * visible and not minimized.
	 */
	return COM.S_OK;
}
/**
 * Displays a dialog with the property information for this OLE Object.  The OLE Document or
 * ActiveX Control must support the ISpecifyPropertyPages interface.
 *
 * @param title the name that will appear in the titlebar of the dialog
 */
public void showProperties(String title) {

	// Get the Property Page information from the OLE Object
	int[] ppvObject = new int[1];
	if (objIUnknown.QueryInterface(COM.IIDISpecifyPropertyPages, ppvObject) != COM.S_OK) return;
	ISpecifyPropertyPages objISPP = new ISpecifyPropertyPages(ppvObject[0]);
	CAUUID caGUID = new CAUUID();
	int result = objISPP.GetPages(caGUID);
	objISPP.Release();
	if (result != COM.S_OK) return;

	// create a frame in which to display the pages
	char[] chTitle = null;
	if (title != null) {
		chTitle = new char[title.length()];
		title.getChars(0, title.length(), chTitle, 0);
	}
	result = COM.OleCreatePropertyFrame(frame.handle, 10, 10, chTitle, 1, new int[] {objIUnknown.getAddress()}, caGUID.cElems, caGUID.pElems, COM.LOCALE_USER_DEFAULT, 0, 0);

	// free the property page information
	COM.CoTaskMemFree(caGUID.pElems);
}
private boolean updateStorage() {

	if (tempStorage == null) return false;

	int[] ppv = new int[1];
	if (objIUnknown.QueryInterface(COM.IIDIPersistStorage, ppv) != COM.S_OK) return false;
	IPersistStorage iPersistStorage = new IPersistStorage(ppv[0]);

	int result = COM.OleSave(iPersistStorage.getAddress(), tempStorage.getAddress(), true);

	if (result != COM.S_OK){
		// OleSave will fail for static objects, so do what OleSave does.
		COM.WriteClassStg(tempStorage.getAddress(), objClsid);
		result = iPersistStorage.Save(tempStorage.getAddress(), true);
	}
	
	tempStorage.Commit(COM.STGC_DEFAULT);
	result = iPersistStorage.SaveCompleted(0);
	iPersistStorage.Release();	
		
	return true;
}
private SIZE xFormHimetricToPixels(SIZE aSize) {
	// Return a new Size which is the pixel transformation of a 
	// size in HIMETRIC units.

	int hDC = OS.GetDC(0);
	int xppi = OS.GetDeviceCaps(hDC, 88); // logical pixels/inch in x
	int yppi = OS.GetDeviceCaps(hDC, 90); // logical pixels/inch in y
	OS.ReleaseDC(0, hDC);
	int cx = Compatibility.round(aSize.cx * xppi, 2540); // 2540 HIMETRIC units per inch
	int cy = Compatibility.round(aSize.cy * yppi, 2540);
	SIZE size = new SIZE();
	size.cx = cx;
	size.cy = cy;
	return size;
}
private SIZE xFormPixelsToHimetric(SIZE aSize) {
	// Return a new size which is the HIMETRIC transformation of a 
	// size in pixel units.

	int hDC = OS.GetDC(0);
	int xppi = OS.GetDeviceCaps(hDC, 88); // logical pixels/inch in x
	int yppi = OS.GetDeviceCaps(hDC, 90); // logical pixels/inch in y
	OS.ReleaseDC(0, hDC);
	int cx = Compatibility.round(aSize.cx * 2540, xppi); // 2540 HIMETRIC units per inch
	int cy = Compatibility.round(aSize.cy * 2540, yppi);
	SIZE size = new SIZE();
	size.cx = cx;
	size.cy = cy;
	return size;
}
}