private boolean checkLastImage() {
File file = new File(DesignerApplicationManager.APP_DIR, LAST_PREVIEW_IMAGE_FILE_NAME);
if (!file.exists()) {
return false;
}
try {
final VirtualFile virtualFile = toolWindowForm.getFile();
BufferedImage image =
IOUtil.readImage(
file,
new Processor<DataInputStream>() {
@Override
public boolean process(DataInputStream in) {
try {
return in.readLong() == virtualFile.getTimeStamp()
&& in.readUTF().equals(virtualFile.getUrl());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
});
if (image != null) {
toolWindowForm.getPreviewPanel().setImage(image);
return true;
}
} catch (IOException e) {
LogMessageUtil.LOG.warn("Can't read image for last document", e);
}
return false;
}
private void saveLastImage(final VirtualFile file) {
BufferedImage image = toolWindowForm.getPreviewPanel().getImage();
if (image != null) {
try {
IOUtil.saveImage(
toolWindowForm.getPreviewPanel().getImage(),
new File(DesignerApplicationManager.APP_DIR, LAST_PREVIEW_IMAGE_FILE_NAME),
new Consumer<DataOutputStream>() {
@Override
public void consume(DataOutputStream out) {
try {
out.writeLong(file.getTimeStamp());
out.writeUTF(file.getUrl());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
});
} catch (Throwable e) {
LogMessageUtil.LOG.warn("Can't save image for last document", e);
}
}
}
private void render(final boolean isSlow, final boolean clearPreviousOnError) {
if (!toolWindowVisible) {
return;
}
final VirtualFile file = toolWindowForm.getFile();
if (file == null) {
return;
}
toolWindowForm.getPreviewPanel().clearCannotRender();
if (isSlow) {
toolWindowForm.getPreviewPanel().getLoadingDecorator().startLoading(false);
loadingDecoratorStarted++;
}
toolWindowForm.waitingForGetDocument = true;
XmlFile xmlFile = (XmlFile) PsiManager.getInstance(project).findFile(file);
LogMessageUtil.LOG.assertTrue(xmlFile != null);
AsyncResult<BufferedImage> result =
DesignerApplicationManager.getInstance().getDocumentImage(xmlFile);
result.doWhenDone(
new QueuedAsyncResultHandler<BufferedImage>() {
@Override
protected boolean isExpired() {
return toolWindowForm == null || !file.equals(toolWindowForm.getFile());
}
@Override
public void process(final BufferedImage image) {
UIUtil.invokeLaterIfNeeded(
new Runnable() {
@Override
public void run() {
toolWindowForm.getPreviewPanel().setImage(image);
}
});
}
});
result.doWhenProcessed(
new Runnable() {
@Override
public void run() {
toolWindowForm.waitingForGetDocument = false;
if (isSlow && --loadingDecoratorStarted == 0 && toolWindowForm != null) {
toolWindowForm.getPreviewPanel().getLoadingDecorator().stopLoading();
}
}
});
result.doWhenRejected(
new Runnable() {
@Override
public void run() {
if (clearPreviousOnError) {
toolWindowForm.getPreviewPanel().setImage(null);
}
UIUtil.invokeLaterIfNeeded(
new Runnable() {
@Override
public void run() {
toolWindowForm.getPreviewPanel().showCannotRender();
}
});
}
});
}