X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Fwinterwell.markdown%2Fsrc%2Fwinterwell%2Fmarkdown%2Feditors%2FMDTextHover.java;fp=bundles%2Fwinterwell.markdown%2Fsrc%2Fwinterwell%2Fmarkdown%2Feditors%2FMDTextHover.java;h=04377a622aa36e544b6d84560bce71314e76f46f;hb=2531cdf245f42bce854d43f4d49a23983c79db96;hp=0000000000000000000000000000000000000000;hpb=857dbc869796d772864327ce02f19dc252b159fc;p=simantics%2Fplatform.git

diff --git a/bundles/winterwell.markdown/src/winterwell/markdown/editors/MDTextHover.java b/bundles/winterwell.markdown/src/winterwell/markdown/editors/MDTextHover.java
new file mode 100644
index 000000000..04377a622
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+++ b/bundles/winterwell.markdown/src/winterwell/markdown/editors/MDTextHover.java
@@ -0,0 +1,81 @@
+/**
+ * (c) Winterwell 2010 and ThinkTank Mathematics 2007
+ */
+package winterwell.markdown.editors;
+
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.ITextHover;
+import org.eclipse.jface.text.ITextViewer;
+import org.eclipse.jface.text.Region;
+
+import winterwell.markdown.StringMethods;
+import winterwell.utils.containers.Pair;
+
+/**
+ * 
+ *
+ * @author daniel
+ */
+public class MDTextHover implements ITextHover //, ITextHoverExtension 
+{
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.jface.text.ITextHover#getHoverInfo(org.eclipse.jface.text.ITextViewer, org.eclipse.jface.text.IRegion)
+	 */
+	public String getHoverInfo(ITextViewer textViewer, IRegion region) {
+		try {
+			IDocument doc = textViewer.getDocument();
+			String text = doc.get(region.getOffset(), region.getLength());
+			return "<b>"+text+"</b>";
+		} catch (Exception e) {
+			return null;
+		}		
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.jface.text.ITextHover#getHoverRegion(org.eclipse.jface.text.ITextViewer, int)
+	 */
+	public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
+		try {
+			IDocument doc = textViewer.getDocument();
+			int line = doc.getLineOfOffset(offset);
+			int lineOffset = doc.getLineOffset(line);
+			int lineLength = doc.getLineLength(line);
+			String text = doc.get(lineOffset, lineLength);
+			// Look for image tags
+			Pair<Integer> altRegion;
+			Pair<Integer> urlRegion = 
+				StringMethods.findEnclosingRegion(text, offset-lineOffset, '(', ')');
+			if (urlRegion==null) {
+				altRegion = StringMethods.findEnclosingRegion(text, offset-lineOffset, '[', ']');
+				if (altRegion == null) return null;
+				urlRegion = StringMethods.findEnclosingRegion(text, altRegion.second, '(', ')');
+			} else {
+				altRegion = StringMethods.findEnclosingRegion(text, urlRegion.first-1, '[', ']');
+			}
+			if (urlRegion==null || altRegion==null) return null;
+			// Is it an image link?
+			if (text.charAt(altRegion.first-1) != '!') return null;
+			Region r = new Region(urlRegion.first+1+lineOffset, urlRegion.second-urlRegion.first-2);
+			return r;
+		} catch (Exception ex) {
+			return null;
+		}
+	}
+
+//	public IInformationControlCreator getHoverControlCreator() {
+//		return new IInformationControlCreator() {
+//			public IInformationControl createInformationControl(Shell parent) {
+//				int style= fIsFocusable ? SWT.V_SCROLL | SWT.H_SCROLL : SWT.NONE;
+//				
+//				if (BrowserInformationControl.isAvailable(parent)) {
+//		            final int shellStyle= SWT.TOOL | (fIsFocusable ? SWT.RESIZE : SWT.NO_TRIM);
+//		            return new BrowserInformationControl(parent, shellStyle, style, null);
+//	            }
+//				return new DefaultInformationControl(parent, style, new HTMLTextPresenter());
+//			}						
+//		};
+//	}
+
+}