New UI for Find command: find-as-you-type.

editor/tools/plugins/com.xored.glance.ui/src/com/xored/glance/ui/controls/text/styled/ListeningStyledTextSource.java

Index: editor/tools/plugins/com.xored.glance.ui/src/com/xored/glance/ui/controls/text/styled/ListeningStyledTextSource.java
===================================================================
--- editor/tools/plugins/com.xored.glance.ui/src/com/xored/glance/ui/controls/text/styled/ListeningStyledTextSource.java	(revision 0)
+++ editor/tools/plugins/com.xored.glance.ui/src/com/xored/glance/ui/controls/text/styled/ListeningStyledTextSource.java	(revision 0)
@@ -0,0 +1,98 @@
+/**
+ * 
+ */
+package com.xored.glance.ui.controls.text.styled;
+
+import com.xored.glance.internal.ui.GlancePlugin;
+import com.xored.glance.ui.sources.Match;
+import com.xored.glance.ui.utils.TextUtils;
+
+import org.eclipse.jface.text.Region;
+import org.eclipse.jface.text.TextPresentation;
+import org.eclipse.swt.custom.ExtendedModifyEvent;
+import org.eclipse.swt.custom.LineStyleEvent;
+import org.eclipse.swt.custom.LineStyleListener;
+import org.eclipse.swt.custom.StyledText;
+
+/**
+ * @author Yuri Strot
+ */
+public class ListeningStyledTextSource extends AbstractStyledTextSource implements
+    LineStyleListener {
+
+  private Match[] matches = Match.EMPTY;
+
+  /**
+   * @param text
+   */
+  public ListeningStyledTextSource(final StyledText text) {
+    super(text);
+    text.addLineStyleListener(this);
+  }
+
+  @Override
+  public void lineGetStyle(final LineStyleEvent event) {
+    if (matches.length > 0) {
+      final int offset = event.lineOffset;
+      final int length = event.lineText.length();
+
+      int size = event.styles == null ? 0 : event.styles.length;
+      if (size == 0) {
+        size = 1;
+      }
+      final TextPresentation presentation = new TextPresentation(new Region(offset, length), size);
+      if (event.styles != null && event.styles.length > 0) {
+        presentation.replaceStyleRanges(event.styles);
+      }
+      applyTextPresentation(presentation);
+      event.styles = TextUtils.getStyles(presentation);
+    }
+  }
+
+  @Override
+  public void select(final Match match) {
+    super.select(match);
+    refresh();
+  }
+
+  @Override
+  public void show(final Match[] matches) {
+    this.matches = matches;
+    refresh();
+  }
+
+  @Override
+  protected StyledTextBlock createTextBlock() {
+    return new StyledTextBlock(getText()) {
+      @Override
+      public void modifyText(final ExtendedModifyEvent event) {
+        matches = Match.EMPTY;
+        super.modifyText(event);
+      }
+    };
+  }
+
+  @Override
+  protected void doDispose() {
+    final StyledText text = getText();
+    try {
+      super.doDispose();
+      try {
+        text.removeLineStyleListener(this);
+      } finally {
+        refresh();
+      }
+    } catch (final Exception e) {
+      GlancePlugin.log("Problems with '" + text.getClass() + "'", e);
+    }
+  }
+
+  private void applyTextPresentation(final TextPresentation presentation) {
+    TextUtils.applyStyles(presentation, matches, selected);
+  }
+
+  private void refresh() {
+    final String text = getText().getText();
+    getText().redrawRange(0, text.length(), false);
+  }
+}