-/*******************************************************************************\r
- * Copyright (c) 2008 Mateusz Matela and others.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- * Mateusz Matela <mateusz.matela@gmail.com> - Make StyledText work with ContentAssistCommandAdapter - https://bugs.eclipse.org/bugs/show_bug.cgi?id=246388\r
- *******************************************************************************/\r
-package org.simantics.scl.ui.assist;\r
-\r
-import org.eclipse.jface.fieldassist.IControlContentAdapter;\r
-import org.eclipse.jface.fieldassist.IControlContentAdapter2;\r
-import org.eclipse.swt.custom.StyledText;\r
-import org.eclipse.swt.graphics.Point;\r
-import org.eclipse.swt.graphics.Rectangle;\r
-import org.eclipse.swt.widgets.Control;\r
-\r
-/**\r
- * An {@link IControlContentAdapter} for {@link org.eclipse.swt.custom.StyledText}. This is\r
- * a convenience class for easily creating a {@link ContentProposalAdapter} for text fields.\r
- * \r
- * @since 3.5\r
- */\r
-public class StyledTextContentAdapter implements IControlContentAdapter, IControlContentAdapter2 {\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see\r
- * org.eclipse.jface.fieldassist.IControlContentAdapter#getControlContents(org.eclipse\r
- * .swt.widgets.Control)\r
- */\r
- public String getControlContents(Control control) {\r
- return ((StyledText)control).getText();\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see\r
- * org.eclipse.jface.fieldassist.IControlContentAdapter#getCursorPosition(org.eclipse\r
- * .swt.widgets.Control)\r
- */\r
- public int getCursorPosition(Control control) {\r
- return ((StyledText)control).getCaretOffset();\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see\r
- * org.eclipse.jface.fieldassist.IControlContentAdapter#getInsertionBounds(org.eclipse\r
- * .swt.widgets.Control)\r
- */\r
- public Rectangle getInsertionBounds(Control control) {\r
- StyledText text= (StyledText)control;\r
- Point caretOrigin= text.getLocationAtOffset(text.getCaretOffset());\r
- return new Rectangle(caretOrigin.x + text.getClientArea().x, caretOrigin.y + text.getClientArea().y + 3, 1, text.getLineHeight());\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see\r
- * org.eclipse.jface.fieldassist.IControlContentAdapter#insertControlContents(org.eclipse\r
- * .swt.widgets.Control, java.lang.String, int)\r
- */\r
- public void insertControlContents(Control control, String contents, int cursorPosition) {\r
- StyledText text = ((StyledText)control);\r
- cursorPosition = Math.min(cursorPosition, contents.length());\r
- int caretEndRange = text.getCaretOffset();\r
- String currentText = text.getText();\r
- \r
- int offset = caretEndRange;\r
- int length = currentText.length();\r
- while (--offset >= 0 && (Character.isJavaIdentifierPart(currentText.charAt(offset)) && !Character.isWhitespace(currentText.charAt(offset))))\r
- length--;\r
- \r
- int nameSpaceBeginRange = currentText.lastIndexOf(".", caretEndRange - 1);\r
- if (nameSpaceBeginRange > length)\r
- length = nameSpaceBeginRange;\r
- int endRange = currentText.length();\r
- if (caretEndRange < endRange)\r
- endRange = caretEndRange;\r
- text.setSelection(length, endRange);\r
- text.insert(contents);\r
- // calculate the initial count of letters that was typed when the proposal was accepted to insert the caret\r
- // at the right position\r
- int proposalFirstLettersCount = endRange - (length);\r
- text.setCaretOffset(caretEndRange + cursorPosition - proposalFirstLettersCount);\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see\r
- * org.eclipse.jface.fieldassist.IControlContentAdapter#setControlContents(org.eclipse\r
- * .swt.widgets.Control, java.lang.String, int)\r
- */\r
- public void setControlContents(Control control, String contents, int cursorPosition) {\r
- ((StyledText)control).setText(contents);\r
- ((StyledText)control).setCaretOffset(cursorPosition);\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see\r
- * org.eclipse.jface.fieldassist.IControlContentAdapter#setCursorPosition(org.eclipse\r
- * .swt.widgets.Control, int)\r
- */\r
- public void setCursorPosition(Control control, int index) {\r
- ((StyledText)control).setCaretOffset(index);\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see\r
- * org.eclipse.jface.fieldassist.IControlContentAdapter2#getSelection(org.eclipse.swt\r
- * .widgets.Control)\r
- */\r
- public Point getSelection(Control control) {\r
- return ((StyledText)control).getSelection();\r
- }\r
-\r
- /*\r
- * (non-Javadoc)\r
- * \r
- * @see\r
- * org.eclipse.jface.fieldassist.IControlContentAdapter2#setSelection(org.eclipse.swt\r
- * .widgets.Control, org.eclipse.swt.graphics.Point)\r
- */\r
- public void setSelection(Control control, Point range) {\r
- ((StyledText)control).setSelection(range);\r
- }\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2008 Mateusz Matela and others.
+ * 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:
+ * Mateusz Matela <mateusz.matela@gmail.com> - Make StyledText work with ContentAssistCommandAdapter - https://bugs.eclipse.org/bugs/show_bug.cgi?id=246388
+ *******************************************************************************/
+package org.simantics.scl.ui.assist;
+
+import org.eclipse.jface.fieldassist.ContentProposalAdapter;
+import org.eclipse.jface.fieldassist.IControlContentAdapter;
+import org.eclipse.jface.fieldassist.IControlContentAdapter2;
+import org.eclipse.swt.custom.StyledText;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Control;
+
+/**
+ * An {@link IControlContentAdapter} for {@link org.eclipse.swt.custom.StyledText}. This is
+ * a convenience class for easily creating a {@link ContentProposalAdapter} for text fields.
+ *
+ * @since 3.5
+ */
+public class StyledTextContentAdapter implements IControlContentAdapter, IControlContentAdapter2 {
+ /*
+ * (non-Javadoc)
+ *
+ * @see
+ * org.eclipse.jface.fieldassist.IControlContentAdapter#getControlContents(org.eclipse
+ * .swt.widgets.Control)
+ */
+ public String getControlContents(Control control) {
+ return ((StyledText)control).getText();
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see
+ * org.eclipse.jface.fieldassist.IControlContentAdapter#getCursorPosition(org.eclipse
+ * .swt.widgets.Control)
+ */
+ public int getCursorPosition(Control control) {
+ return ((StyledText)control).getCaretOffset();
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see
+ * org.eclipse.jface.fieldassist.IControlContentAdapter#getInsertionBounds(org.eclipse
+ * .swt.widgets.Control)
+ */
+ public Rectangle getInsertionBounds(Control control) {
+ StyledText text= (StyledText)control;
+ Point caretOrigin= text.getLocationAtOffset(text.getCaretOffset());
+ return new Rectangle(caretOrigin.x + text.getClientArea().x, caretOrigin.y + text.getClientArea().y + 3, 1, text.getLineHeight());
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see
+ * org.eclipse.jface.fieldassist.IControlContentAdapter#insertControlContents(org.eclipse
+ * .swt.widgets.Control, java.lang.String, int)
+ */
+ public void insertControlContents(Control control, String contents, int cursorPosition) {
+ StyledText text = ((StyledText)control);
+ cursorPosition = Math.min(cursorPosition, contents.length());
+
+ int caretOffset = text.getCaretOffset();
+ String currentText = text.getText();
+ int replacementOffset = findPrefixMatchOffset(currentText, caretOffset, contents);
+
+// System.out.println("text: " + currentText);
+// System.out.println("proposal to fill: " + contents);
+// System.out.format("longest match of proposed contents found from text @ offset %d: \"%s[%s]%s\"%n",
+// replacementOffset,
+// currentText.substring(0, replacementOffset),
+// currentText.substring(replacementOffset, caretOffset),
+// currentText.substring(caretOffset));
+
+ // The text between [replaceOffset, caretOffset) will be replaced with `contents`
+ text.setSelection(replacementOffset, caretOffset);
+ text.insert(contents);
+ text.setSelection(replacementOffset + contents.length());
+ }
+
+ /**
+ * Find offset of longest prefix match of <code>match</code> in
+ * <code>text</code> ending at offset <code>endOffset</code>.
+ *
+ * Example:
+ * <pre>
+ * ... res (=text)
+ * resource (=match)
+ * resourc
+ * resour
+ * resou
+ * reso
+ * res match! return endOffset - 3
+ * </pre>
+ *
+ * @param text the text from which to find the match
+ * @param endOffset endOffset until which to search for the longest match
+ * @param match the text to prefix-match
+ * @return
+ */
+ private static int findPrefixMatchOffset(String text, int endOffset, String match) {
+ for (int i = match.length(); i >= 0; --i) {
+ if (text.regionMatches(true, endOffset - i, match, 0, i))
+ return endOffset - i;
+ }
+ return 0;
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see
+ * org.eclipse.jface.fieldassist.IControlContentAdapter#setControlContents(org.eclipse
+ * .swt.widgets.Control, java.lang.String, int)
+ */
+ public void setControlContents(Control control, String contents, int cursorPosition) {
+ ((StyledText)control).setText(contents);
+ ((StyledText)control).setCaretOffset(cursorPosition);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see
+ * org.eclipse.jface.fieldassist.IControlContentAdapter#setCursorPosition(org.eclipse
+ * .swt.widgets.Control, int)
+ */
+ public void setCursorPosition(Control control, int index) {
+ ((StyledText)control).setCaretOffset(index);
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see
+ * org.eclipse.jface.fieldassist.IControlContentAdapter2#getSelection(org.eclipse.swt
+ * .widgets.Control)
+ */
+ public Point getSelection(Control control) {
+ return ((StyledText)control).getSelection();
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see
+ * org.eclipse.jface.fieldassist.IControlContentAdapter2#setSelection(org.eclipse.swt
+ * .widgets.Control, org.eclipse.swt.graphics.Point)
+ */
+ public void setSelection(Control control, Point range) {
+ ((StyledText)control).setSelection(range);
+ }
+
+}
Code Review / simantics / platform.git / blobdiff