@Override
public void selectionChanged(@NotNull FileEditorManagerEvent event) {
final FileEditor newFileEditor = event.getNewEditor();
Editor mxmlEditor = null;
if (newFileEditor instanceof TextEditor) {
final Editor editor = ((TextEditor) newFileEditor).getEditor();
if (DesignerApplicationManager.dumbAwareIsApplicable(
project, PsiDocumentManager.getInstance(project).getPsiFile(editor.getDocument()))) {
mxmlEditor = editor;
}
}
if (mxmlEditor == null) {
processFileEditorChange(null);
return;
}
final DumbService dumbService = DumbService.getInstance(project);
if (dumbService.isDumb()) {
openWhenSmart(dumbService);
} else {
if (!isApplicableEditor(mxmlEditor)) {
mxmlEditor = null;
}
processFileEditorChange(mxmlEditor);
}
}
private boolean isApplicableEditor(Editor editor) {
final Document document = editor.getDocument();
return DesignerApplicationManager.isApplicable(
project, PsiDocumentManager.getInstance(project).getPsiFile(document));
}
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();
}
});
}
});
}