private boolean isRelevant(PsiTreeChangeEvent event) {
if (myToolWindowForm == null || !myToolWindowReady || myToolWindowDisposed) {
return false;
}
final PsiFile fileInPreview = myToolWindowForm.getFile();
final PsiFile file = event.getFile();
if (fileInPreview == null || file == null || fileInPreview != file) {
return false;
}
PsiElement child = event.getChild();
PsiElement parent = event.getParent();
// We can ignore edits in whitespace, and in XML error nodes, and in comments
// (Note that editing text in an attribute value, including whitespace characters,
// is not a PsiWhiteSpace element; it's an XmlToken of token type XML_ATTRIBUTE_VALUE_TOKEN
if (child instanceof PsiWhiteSpace
|| child instanceof PsiErrorElement
|| child instanceof XmlComment
|| parent instanceof XmlComment) {
return false;
}
return true;
}
public boolean render() {
ApplicationManager.getApplication().assertIsDispatchThread();
if (myToolWindow == null || !myToolWindow.isVisible()) {
return false;
}
final PsiFile psiFile = myToolWindowForm.getFile();
if (psiFile == null) {
return false;
}
final AndroidFacet facet = AndroidFacet.getInstance(psiFile);
if (facet == null) {
return false;
}
getRenderingQueue()
.queue(
new Update("render") {
@Override
public void run() {
ProgressManager.getInstance()
.runProcess(
new Runnable() {
@Override
public void run() {
DumbService.getInstance(myProject).waitForSmartMode();
try {
doRender(facet, psiFile);
} catch (Throwable e) {
LOG.error(e);
}
synchronized (PROGRESS_LOCK) {
if (myCurrentIndicator != null) {
myCurrentIndicator.stop();
myCurrentIndicator = null;
}
}
}
},
new AndroidPreviewProgressIndicator(myToolWindowForm, 100));
}
@Override
public boolean canEat(Update update) {
return true;
}
});
return true;
}