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[#70] Add hover provider for debugging
Adds a hover provider which delegates to the cdt debug hover mechanism.
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48 changes: 48 additions & 0 deletions
48
bundles/org.eclipse.cdt.lsp/src/org/eclipse/cdt/lsp/editor/DebugHoverProvider.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| package org.eclipse.cdt.lsp.editor; | ||
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| import java.util.Objects; | ||
| import java.util.Optional; | ||
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| import org.eclipse.cdt.ui.text.c.hover.ICEditorTextHover; | ||
| import org.eclipse.debug.ui.DebugUITools; | ||
| import org.eclipse.jface.text.IInformationControlCreator; | ||
| import org.eclipse.jface.text.IRegion; | ||
| import org.eclipse.jface.text.ITextHover; | ||
| import org.eclipse.jface.text.ITextHoverExtension; | ||
| import org.eclipse.jface.text.ITextHoverExtension2; | ||
| import org.eclipse.jface.text.ITextViewer; | ||
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| /** | ||
| * Delegates hover to the text hover implementation of cdt. | ||
| */ | ||
| public class DebugHoverProvider implements ITextHover, ITextHoverExtension, ITextHoverExtension2 { | ||
| @Override | ||
| public IInformationControlCreator getHoverControlCreator() { | ||
| return getDelegate(ITextHoverExtension.class).map(ITextHoverExtension::getHoverControlCreator).orElse(null); | ||
| } | ||
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| @SuppressWarnings("deprecation") | ||
| @Override | ||
| public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) { | ||
| return getDelegate(ITextHover.class).map(delegate -> delegate.getHoverInfo(textViewer, hoverRegion)) | ||
| .orElse(null); | ||
| } | ||
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| @Override | ||
| public IRegion getHoverRegion(ITextViewer textViewer, int offset) { | ||
| return getDelegate(ITextHover.class).map(delegate -> delegate.getHoverRegion(textViewer, offset)).orElse(null); | ||
| } | ||
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| @Override | ||
| public Object getHoverInfo2(ITextViewer textViewer, IRegion hoverRegion) { | ||
| return getDelegate(ITextHoverExtension2.class).map(delegate -> delegate.getHoverInfo2(textViewer, hoverRegion)) | ||
| .orElse(null); | ||
| } | ||
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| private <T> Optional<T> getDelegate(Class<T> clazz) { | ||
| return Optional.ofNullable(DebugUITools.getDebugContext()) | ||
| .map(adaptable -> adaptable.getAdapter(ICEditorTextHover.class)).filter(Objects::nonNull) | ||
| .filter(clazz::isInstance).map(clazz::cast); | ||
| } | ||
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| } |
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