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

editor/tools/plugins/com.xored.glance.ui/src/com/xored/glance/internal/ui/search/SearchJob.java

Index: editor/tools/plugins/com.xored.glance.ui/src/com/xored/glance/internal/ui/search/SearchJob.java
===================================================================
--- editor/tools/plugins/com.xored.glance.ui/src/com/xored/glance/internal/ui/search/SearchJob.java	(revision 0)
+++ editor/tools/plugins/com.xored.glance.ui/src/com/xored/glance/internal/ui/search/SearchJob.java	(revision 0)
@@ -0,0 +1,115 @@
+/*******************************************************************************
+ * Copyright (c) 2008 xored software, Inc. All rights reserved. This program and the accompanying
+ * materials are made available under the terms of the Eclipse Public License v1.0 which accompanies
+ * this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html Contributors:
+ * xored software, Inc. - initial API and Implementation (Yuri Strot)
+ *******************************************************************************/
+package com.xored.glance.internal.ui.search;
+
+import java.util.regex.Matcher;
+
+import com.xored.glance.ui.sources.ITextBlock;
+import com.xored.glance.ui.sources.Match;
+
+/**
+ * @author Yuri Strot
+ */
+public class SearchJob extends SearchScopeEntry {
+
+  public SearchJob(ITextBlock block, Matcher matcher, ISearchMonitor monitor) {
+    super(block, monitor);
+    update(matcher);
+  }
+
+  public void update(Matcher matcher) {
+    this.matcher = matcher;
+    clear();
+  }
+
+  @Override
+  protected void doClear() {
+    super.doClear();
+    finished = false;
+  }
+
+  /**
+   * @return the finished
+   */
+  public boolean isFinished() {
+    return finished;
+  }
+
+  public boolean run() {
+    if (matcher == null)
+      return false;
+    matcher.reset(getText());
+    int from = getStart();
+    if (!find(from, getText().length()))
+      return false;
+    addMatchToBegin();
+    if (!find(0, from - 1))
+      return false;
+    finished = true;
+    setStart(0);
+    return true;
+  }
+
+  private boolean find(int from, int to) {
+    int k = 1;
+    int limit = getText().length();
+    if (from >= to || from > limit)
+      return true;
+    Match match = find(from);
+    if (getMonitor().isCanceled())
+      return false;
+    if (match != null) {
+      from = match.getOffset() + 1;
+      if (from > to || from > limit)
+        return true;
+      addMatch(match);
+      match = find(from);
+      while ((match = find(from)) != null) {
+        if (match.getOffset() >= to)
+          return true;
+        addMatch(match);
+        if (k++ == 20) {
+          if (getMonitor().isCanceled())
+            return false;
+          k = 0;
+        }
+        from = match.getOffset() + 1;
+      }
+    }
+    return true;
+  }
+
+  private Match find(int from) {
+    try {
+      if (matcher.find(from)) {
+        int start = matcher.start();
+        int end = matcher.end();
+        if (end != start) { // don't report 0-length matches
+          return new Match(getBlock(), start, end - start);
+        }
+      }
+    } catch (Exception e) {
+      // It can be an exception while we matching.
+      // So return if exception occured
+    }
+    return null;
+  }
+
+  private ISearchMonitor getMonitor() {
+    return (ISearchMonitor) getListener();
+  }
+
+  interface ISearchMonitor extends IMatchListener {
+
+    boolean isCanceled();
+
+  }
+
+  private boolean finished;
+  private Matcher matcher;
+
+}