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PT #162167333: Ask JDT server for hover links (Eclipse, VSCode)

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This commit is contained in:
BoykoAlex
2018-12-11 16:59:40 -05:00
parent 02f45063b8
commit db429f9c21
60 changed files with 1496 additions and 209 deletions
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68
eclipse-language-servers/org.springframework.tooling.boot.ls/src/org/springframework/tooling/boot/ls/jdt/SpringBootJavaHoverProvider.java
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@@ -10,43 +10,77 @@
*******************************************************************************/
package org.springframework.tooling.boot.ls.jdt;
import org.eclipse.jdt.ui.text.java.hover.IJavaEditorTextHover;
import org.eclipse.jface.text.IInformationControlCreator;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.internal.ui.text.java.hover.JavadocBrowserInformationControlInput;
import org.eclipse.jdt.internal.ui.text.java.hover.JavadocHover;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextHoverExtension;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.lsp4e.operations.hover.LSBasedHover;
import org.eclipse.ui.IEditorPart;
/**
* @author Martin Lippert
*/
@SuppressWarnings("restriction")
public class SpringBootJavaHoverProvider implements IJavaEditorTextHover, ITextHoverExtension {
public class SpringBootJavaHoverProvider extends JavadocHover {
private LSBasedHover lsBasedHover;
public SpringBootJavaHoverProvider() {
super();
lsBasedHover = new LSBasedHover();
}
@Override
public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
return this.lsBasedHover.getHoverInfo(textViewer, hoverRegion);
public Object getHoverInfo2(ITextViewer textViewer, IRegion hoverRegion) {
// Launch javadoc hover computation in async fashion
CompletableFuture<JavadocBrowserInformationControlInput> javadocHoverFuture = CompletableFuture.supplyAsync(
() -> (JavadocBrowserInformationControlInput) super.getHoverInfo2(textViewer, hoverRegion));
String content = this.lsBasedHover.getHoverInfo(textViewer, hoverRegion);
if (content != null && !content.isEmpty()) {
IJavaElement javaElement = null;
JavadocBrowserInformationControlInput previous = null;
int leadingImageWidth = 0;
JavadocBrowserInformationControlInput input;
String html = "";
try {
input = javadocHoverFuture.get(500, TimeUnit.MILLISECONDS);
if (input != null) {
previous = (JavadocBrowserInformationControlInput) input.getPrevious();
javaElement = input.getElement();
leadingImageWidth = input.getLeadingImageWidth();
html = input.getHtml();
}
} catch (InterruptedException e) {
html = noJavadocMessage("Javadoc unavailable.");
} catch (ExecutionException e) {
html = noJavadocMessage("Javadoc unavailable. Failed to obtain it.");
} catch (TimeoutException e) {
html = noJavadocMessage("Javadoc unavailable. Took too long to obtain it.");
}
content = content + html;
return new JavadocBrowserInformationControlInput(previous, javaElement, content, leadingImageWidth);
} else {
javadocHoverFuture.cancel(true);
}
return null;
}
private String noJavadocMessage(String message) {
StringBuilder sb = new StringBuilder();
sb.append("<h4>");
sb.append(message);
sb.append("</h4>");
return sb.toString();
}
@Override
public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
return this.lsBasedHover.getHoverRegion(textViewer, offset);
}
@Override
public void setEditor(IEditorPart editor) {
}
@Override
public IInformationControlCreator getHoverControlCreator() {
return this.lsBasedHover.getHoverControlCreator();
}
}