From: batxo <batxo@users.sourceforge.jp>
Date: Sun, 26 Dec 2010 16:16:11 +0000 (+0900)
Subject: ジャンプ機能を実装
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=HEAD;p=coboled%2FCobolEditor.git

ジャンプ機能を実装
---

diff --git a/plugin.xml b/plugin.xml
index d119feb..ffc51df 100644
--- a/plugin.xml
+++ b/plugin.xml
@@ -21,14 +21,24 @@
         <command
             name="Cobolアウトライン"
             categoryId="coboled.editors.category"
-            id="coboled.editors.command">
+            id="coboled.editors.command.quickoutline">
+        </command>
+        <command
+            name="Cobolジャンプ"
+            categoryId="coboled.editors.category"
+            id="coboled.editors.command.jump">
         </command>
     </extension>
 
     <extension point="org.eclipse.ui.bindings">
         <key sequence="M1+O"
             contextId="coboled.editors.cobolEditorScope"
-            commandId="coboled.editors.command"
+            commandId="coboled.editors.command.quickoutline"
+            schemeId="org.eclipse.ui.defaultAcceleratorConfiguration">
+        </key>
+        <key sequence="F3"
+            contextId="coboled.editors.cobolEditorScope"
+            commandId="coboled.editors.command.jump"
             schemeId="org.eclipse.ui.defaultAcceleratorConfiguration">
         </key>
     </extension>
@@ -44,9 +54,13 @@
 
     <extension point="org.eclipse.ui.handlers">
         <handler
-            commandId="coboled.editors.command"
+            commandId="coboled.editors.command.quickoutline"
             class="coboled.editors.command.QuickOutLineHandler">
         </handler>
+        <handler
+            commandId="coboled.editors.command.jump"
+            class="coboled.editors.command.JumpHandler">
+        </handler>
     </extension>
     
     <extension
diff --git a/src/coboled/editors/command/JumpHandler.java b/src/coboled/editors/command/JumpHandler.java
new file mode 100644
index 0000000..1c77db2
--- /dev/null
+++ b/src/coboled/editors/command/JumpHandler.java
@@ -0,0 +1,142 @@
+package coboled.editors.command;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.eclipse.core.commands.AbstractHandler;
+import org.eclipse.core.commands.ExecutionEvent;
+import org.eclipse.core.commands.ExecutionException;
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.ITextSelection;
+import org.eclipse.jface.viewers.ISelectionProvider;
+import org.eclipse.ui.IWorkbenchWindow;
+import org.eclipse.ui.handlers.HandlerUtil;
+import org.eclipse.ui.texteditor.IDocumentProvider;
+
+import coboled.editors.CobolEditor;
+
+public class JumpHandler extends AbstractHandler {
+
+	@Override
+	public Object execute(ExecutionEvent event) throws ExecutionException {
+		CobolEditor editor = (CobolEditor) HandlerUtil.getActiveEditor(event);
+		String source = getDocument(editor).get();
+		String selection = getSelection(editor);
+		int offset = findDefinition(source, selection);
+		if(offset != -1) {
+			editor.selectAndReveal(offset, selection.length());
+		} else {
+			IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindowChecked(event);
+			MessageDialog.openInformation(window.getShell(),
+					"CobolEditorエラー",
+					selection + "は見つかりませんでした");
+		}
+		return null;
+	}
+	
+	private String getSelection(CobolEditor editor) {
+		ISelectionProvider selectionProvider = editor.getSelectionProvider();
+		ITextSelection selection = (ITextSelection) selectionProvider.getSelection();
+		if(selection.getLength() != 0) {
+			return selection.getText();
+		} else {
+			return getSelectWord(editor);
+		}
+	}
+	
+	private String getSelectWord(CobolEditor editor) {
+		IDocument doc = getDocument(editor);
+		int caretPos = getCaretPos(editor);
+		int startPos, endPos;
+
+		try {
+			int pos = caretPos;
+			char c;
+
+			while (pos >= 0) {
+				c = doc.getChar(pos);
+				if (!Character.isJavaIdentifierPart(c))
+					break;
+				--pos;
+			}
+
+			startPos = pos;
+
+			pos = caretPos;
+			int length = doc.getLength();
+
+			while (pos < length) {
+				c = doc.getChar(pos);
+				if (!Character.isJavaIdentifierPart(c))
+					break;
+				++pos;
+			}
+
+			endPos = pos;
+			int offset = startPos + 1;
+			int wordLength = endPos - offset;
+			return doc.get(offset, wordLength);
+			
+		} catch (BadLocationException e) {
+		}
+		return "";
+	}
+
+	private IDocument getDocument(CobolEditor editor) {
+		IDocumentProvider provider = editor.getDocumentProvider();
+		IDocument doc = provider.getDocument(editor.getEditorInput());
+		return doc;
+	}
+
+	private int getCaretPos(CobolEditor editor) {
+		ISelectionProvider selectionProvider = editor.getSelectionProvider();
+		ITextSelection selection = (ITextSelection) selectionProvider.getSelection();
+		int caretPos = selection.getOffset();
+		return caretPos;
+	}
+	
+	private int findDefinition(String source, String selection) {
+		int offset = findSectionDefinition(source, selection);
+		if(offset == -1) {
+			offset = findDataDefinition(source, selection);
+		}
+		return offset;
+	}
+	
+	private int findSectionDefinition(String source, String selection) {
+		StringBuilder patternString = new StringBuilder();
+		patternString.append("^.{6} ( {0,3})");
+		patternString.append("(");
+		patternString.append(selection);
+		patternString.append(")");
+		patternString.append("( +?SECTION)");
+		return find(source, patternString.toString(), 2);
+	}
+	
+	private int findDataDefinition(String source, String selection) {
+		StringBuilder patternString = new StringBuilder();
+		patternString.append("^.{6} ( *?)([0-9][0-9])( +?)");
+		patternString.append("(");
+		patternString.append(selection);
+		patternString.append(")");
+		return find(source, patternString.toString(), 4);
+	}
+	
+	/**
+	 * オフセットを返却する。検索結果が0の場合は-1を返却する。
+	 * 
+	 * @param source
+	 * @param patternString
+	 * @return offset
+	 */
+	private int find(String source, String patternString, int group) {
+		Pattern pattern = Pattern.compile(patternString, Pattern.MULTILINE);
+		Matcher matcher = pattern.matcher(source);
+		if(matcher.find()) {
+			return matcher.start(group);
+		}
+		return -1;
+	}
+}