javax.swing.text.Caret.isSelectionVisible()方法的使用及代码示例

x33g5p2x  于2022-01-18 转载在 其他  
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本文整理了Java中javax.swing.text.Caret.isSelectionVisible()方法的一些代码示例，展示了Caret.isSelectionVisible()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Caret.isSelectionVisible()方法的具体详情如下：
包路径：javax.swing.text.Caret
类名称：Caret
方法名：isSelectionVisible

Caret.isSelectionVisible介绍

暂无

代码示例

代码示例来源：origin: net.java.abeille/abeille

public void run() {
    if (component != null) {
      BaseKit kit = Utilities.getKit(component);
      if (kit != null) {
        boolean selectionVisible = ((Caret) evt.getSource()).isSelectionVisible();
        Action a = kit.getActionByName(BaseKit.cutAction);
        if (a != null) {
          a.setEnabled(selectionVisible);
        }
        a = kit.getActionByName(BaseKit.copyAction);
        if (a != null) {
          a.setEnabled(selectionVisible);
        }
        a = kit.getActionByName(BaseKit.removeSelectionAction);
        if (a != null) {
          a.setEnabled(selectionVisible);
        }
      }
    }
  }
});

代码示例来源：origin: net.java.abeille/abeille

public void actionPerformed(ActionEvent evt, JTextComponent target) {
    if (target != null) {
      FindSupport findSupport = FindSupport.getFindSupport();
      Caret caret = target.getCaret();
      int dotPos = caret.getDot();
      HashMap props = new HashMap(findSupport.getFindProperties());
      String searchWord = null;
      if (caret.isSelectionVisible()) { // valid selection
        searchWord = target.getSelectedText();
        props.put(SettingsNames.FIND_WHOLE_WORDS, Boolean.FALSE);
      }
      else { // no selection, get current word
        try {
          searchWord = Utilities.getIdentifier((BaseDocument) target.getDocument(), dotPos);
          props.put(SettingsNames.FIND_WHOLE_WORDS, Boolean.TRUE);
        } catch (BadLocationException e) {
          e.printStackTrace();
        }
      }
      if (searchWord != null) {
        int n = searchWord.indexOf('\n');
        if (n >= 0)
          searchWord = searchWord.substring(0, n);
        props.put(SettingsNames.FIND_WHAT, searchWord);
        findSupport.putFindProperties(props);
        findSupport.find(null, false);
      }
    }
  }
}

代码示例来源：origin: net.sf.squirrel-sql.thirdparty-non-maven/org-netbeans-modules-editor-lib

/** Get the selection if there's any or get the identifier around
* the position if there's no selection.
*/
public static String getSelectionOrIdentifier(JTextComponent c, int offset)
throws BadLocationException {
  Document doc = c.getDocument();
  Caret caret = c.getCaret();
  String ret;
  if (caret.isSelectionVisible()) {
    ret = c.getSelectedText();
  if (ret != null) return ret;
  } 
if (doc instanceof BaseDocument){
  ret = getIdentifier((BaseDocument) doc, caret.getDot());
  } else {
  ret = getWord(c, offset);
}
  return ret;
}

代码示例来源：origin: net.java.abeille/abeille

/**
 * Get the selection if there's any or get the identifier around the
 * position if there's no selection.
 */
public static String getSelectionOrIdentifier(JTextComponent c, int offset) throws BadLocationException {
  Document doc = c.getDocument();
  Caret caret = c.getCaret();
  String ret;
  if (caret.isSelectionVisible()) {
    ret = c.getSelectedText();
    if (ret != null)
      return ret;
  }
  if (doc instanceof BaseDocument) {
    ret = getIdentifier((BaseDocument) doc, caret.getDot());
  }
  else {
    ret = getWord(c, offset);
  }
  return ret;
}

代码示例来源：origin: net.java.abeille/abeille

/**
 * Get the selection if there's any or get the identifier around the
 * position if there's no selection.
 * 
 * @param c
 *            component to work with
 * @param offset
 *            position in document - usually the caret.getDot()
 * @return the block (starting and ending position) enclosing the identifier
 *         or null if no identifier was found
 */
public static int[] getSelectionOrIdentifierBlock(JTextComponent c, int offset) throws BadLocationException {
  BaseDocument doc = (BaseDocument) c.getDocument();
  Caret caret = c.getCaret();
  int[] ret;
  if (caret.isSelectionVisible()) {
    ret = new int[] { c.getSelectionStart(), c.getSelectionEnd() };
  }
  else {
    ret = getIdentifierBlock(doc, caret.getDot());
  }
  return ret;
}

代码示例来源：origin: net.java.abeille/abeille

public void actionPerformed(ActionEvent evt, JTextComponent target) {
    if (target != null) {
      Caret caret = target.getCaret();
      try {
        if (caret.isSelectionVisible()) {
          caret.setSelectionVisible(false); // unselect if
                            // anything selected
        }
        else { // selection not visible
          int block[] = Utilities.getIdentifierBlock((BaseDocument) target.getDocument(), caret.getDot());
          if (block != null) {
            caret.setDot(block[0]);
            caret.moveDot(block[1]);
          }
        }
      } catch (BadLocationException e) {
        target.getToolkit().beep();
      }
    }
  }
}

代码示例来源：origin: net.sf.squirrel-sql.thirdparty-non-maven/org-netbeans-modules-editor-lib

public void actionPerformed(ActionEvent evt, JTextComponent target) {
    if (target != null) {
      Caret caret = target.getCaret();
      try {
        if (caret.isSelectionVisible()) {
          caret.setSelectionVisible(false); // unselect if anything selected
        } else { // selection not visible
          int block[] = Utilities.getIdentifierBlock((BaseDocument)target.getDocument(),
                 caret.getDot());
          if (block != null) {
            caret.setDot(block[0]);
            caret.moveDot(block[1]);
          }
        }
      } catch (BadLocationException e) {
        target.getToolkit().beep();
      }
    }
  }
}

代码示例来源：origin: net.sf.squirrel-sql.thirdparty-non-maven/org-netbeans-modules-editor-lib

/** Get the selection if there's any or get the identifier around
* the position if there's no selection.
* @param c component to work with
* @param offset position in document - usually the caret.getDot()
* @return the block (starting and ending position) enclosing the identifier
*   or null if no identifier was found
*/
public static int[] getSelectionOrIdentifierBlock(JTextComponent c, int offset)
throws BadLocationException {
  Document doc = c.getDocument();
  Caret caret = c.getCaret();
  int[] ret;
  if (caret.isSelectionVisible()) {
    ret = new int[] { c.getSelectionStart(), c.getSelectionEnd() }; 
  } else if (doc instanceof BaseDocument){
    ret = getIdentifierBlock((BaseDocument)doc, caret.getDot());
  } else {
    ret = getIdentifierBlock(c, offset);
  }
  return ret;
}

代码示例来源：origin: net.sf.squirrel-sql.thirdparty-non-maven/org-netbeans-modules-editor-lib

public boolean isActive(DrawContext ctx, MarkFactory.DrawMark mark) {
  boolean active;
  if (mark != null) {
    active = mark.activateLayer;
  } else {
    JTextComponent c = ctx.getEditorUI().getComponent();
    active = (c != null) && c.getCaret().isSelectionVisible()
         && ctx.getFragmentOffset() >= c.getSelectionStart()
         && ctx.getFragmentOffset() < c.getSelectionEnd();
  }
  return active;
}

代码示例来源：origin: net.java.abeille/abeille

public boolean isActive(DrawContext ctx, MarkFactory.DrawMark mark) {
  boolean active;
  if (mark != null) {
    active = mark.activateLayer;
  }
  else {
    JTextComponent c = ctx.getEditorUI().getComponent();
    active = (c != null) && c.getCaret().isSelectionVisible() && ctx.getFragmentOffset() >= c.getSelectionStart()
        && ctx.getFragmentOffset() < c.getSelectionEnd();
  }
  return active;
}

代码示例来源：origin: net.sf.squirrel-sql.thirdparty-non-maven/org-netbeans-modules-editor-lib

public void actionPerformed(ActionEvent evt, JTextComponent target) {
    if (target != null) {
      if (!target.isEditable() || !target.isEnabled()) {
        target.getToolkit().beep();
        return;
      }
      try {
        Caret caret = target.getCaret();
        BaseDocument doc = (BaseDocument)target.getDocument();
        if (caret.isSelectionVisible()) { // valid selection
          int startPos = target.getSelectionStart();
          int endPos = target.getSelectionEnd();
          Utilities.changeCase(doc, startPos, endPos - startPos, changeCaseMode);
          caret.setSelectionVisible(false);
          caret.setDot(endPos);
        } else { // no selection - change current char
          int dotPos = caret.getDot();
          Utilities.changeCase(doc, dotPos, 1, changeCaseMode);
          caret.setDot(dotPos + 1);
        }
      } catch (BadLocationException e) {
        target.getToolkit().beep();
      }
    }
  }
}

代码示例来源：origin: net.java.abeille/abeille

public void actionPerformed(ActionEvent evt, JTextComponent target) {
    if (target != null) {
      if (!target.isEditable() || !target.isEnabled()) {
        target.getToolkit().beep();
        return;
      }
      try {
        Caret caret = target.getCaret();
        BaseDocument doc = (BaseDocument) target.getDocument();
        if (caret.isSelectionVisible()) { // valid selection
          int startPos = target.getSelectionStart();
          int endPos = target.getSelectionEnd();
          Utilities.changeCase(doc, startPos, endPos - startPos, changeCaseMode);
          caret.setSelectionVisible(false);
          caret.setDot(endPos);
        }
        else { // no selection - change current char
          int dotPos = caret.getDot();
          Utilities.changeCase(doc, dotPos, 1, changeCaseMode);
          caret.setDot(dotPos + 1);
        }
      } catch (BadLocationException e) {
        target.getToolkit().beep();
      }
    }
  }
}

代码示例来源：origin: net.java.abeille/abeille

public void actionPerformed(ActionEvent evt, JTextComponent target) {
    if (target != null) {
      Caret caret = target.getCaret();
      try {
        int pos;
        if (!select && caret.isSelectionVisible()) {
          pos = target.getSelectionEnd();
          if (pos != caret.getDot())
            pos--;
        }
        else
          pos = caret.getDot();
        int dot = target.getUI().getNextVisualPositionFrom(target, pos, null, SwingConstants.EAST, null);
        if (select) {
          caret.moveDot(dot);
        }
        else {
          caret.setDot(dot);
        }
      } catch (BadLocationException ex) {
        target.getToolkit().beep();
      }
    }
  }
}

代码示例来源：origin: net.sf.squirrel-sql.thirdparty-non-maven/org-netbeans-modules-editor-lib

public void actionPerformed(ActionEvent evt, JTextComponent target) {
    if (target != null) {
      Caret caret = target.getCaret();
      try {
        int pos;
        if (!select && caret.isSelectionVisible())
        {
          pos = target.getSelectionEnd(); 
          if (pos != caret.getDot())
            pos--;
        }
        else
          pos = caret.getDot();
        int dot = target.getUI().getNextVisualPositionFrom(target,
             pos, Position.Bias.Forward, SwingConstants.EAST, null);
        if (select) {
          caret.moveDot(dot);
        } else {
          caret.setDot(dot);
        }
      } catch (BadLocationException ex) {
        target.getToolkit().beep();
      }
    }
  }
}

代码示例来源：origin: net.java.abeille/abeille

public void actionPerformed(ActionEvent evt, JTextComponent target) {
    if (target != null) {
      if (!target.isEditable() || !target.isEnabled()) {
        target.getToolkit().beep();
        return;
      }
      try {
        Caret caret = target.getCaret();
        BaseDocument doc = Utilities.getDocument(target);
        if (caret.isSelectionVisible()) {
          doc.getFormatter().changeBlockIndent(doc, target.getSelectionStart(), target.getSelectionEnd(), right ? +1 : -1);
        }
        else {
          doc.getFormatter().shiftLine(doc, caret.getDot(), right);
        }
      } catch (GuardedException e) {
        target.getToolkit().beep();
      } catch (BadLocationException e) {
        e.printStackTrace();
      }
    }
  }
}

代码示例来源：origin: net.java.abeille/abeille

try {
  int pos;
  if (!select && caret.isSelectionVisible()) {
    pos = target.getSelectionStart();
    if (pos != caret.getDot())

代码示例来源：origin: net.sf.squirrel-sql.thirdparty-non-maven/org-netbeans-modules-editor-lib

public void actionPerformed(ActionEvent evt, JTextComponent target) {
    if (target != null) {
      if (!target.isEditable() || !target.isEnabled()) {
        target.getToolkit().beep();
        return;
      }
      try {
        Caret caret = target.getCaret();
        BaseDocument doc = Utilities.getDocument(target);
        if (caret.isSelectionVisible()) {
          doc.getFormatter().changeBlockIndent(doc,
          target.getSelectionStart(), target.getSelectionEnd(),
          right ? +1 : -1);
        } else {
          doc.getFormatter().shiftLine(doc, caret.getDot(), right);
        }
      } catch (GuardedException e) {
        target.getToolkit().beep();
      } catch (BadLocationException e) {
        e.printStackTrace();
      }
    }
  }
}

代码示例来源：origin: nz.ac.waikato.cms.weka.thirdparty/bounce

/**
 * Invalidates the scanner, to make sure a new range is set later.
 * 
 * @param g
 *            the graphics context.
 * @param a
 *            the shape.
 * @see View#paint(Graphics g, Shape a)
 */
public void paint(Graphics g, Shape a) {
  JTextComponent component = (JTextComponent) getContainer();
  Highlighter highlighter = component.getHighlighter();
  Color unselected = component.isEnabled() ? component.getForeground() : component.getDisabledTextColor();
  Caret caret = component.getCaret();
  selected = !caret.isSelectionVisible() || highlighter == null ? unselected : component.getSelectedTextColor();
  super.paint(g, a);
  scanner.setValid(false);
}

代码示例来源：origin: org.netbeans.modules/org-netbeans-modules-ruby-rhtml

public @Override void run() {
    try {
      Caret caret = target.getCaret();
      int startPos;
      int endPos;
      if (caret.isSelectionVisible()) {
        startPos = Utilities.getRowStart(doc, target.getSelectionStart());
        endPos = target.getSelectionEnd();
        if (endPos > 0 && Utilities.getRowStart(doc, endPos) == endPos && endPos > startPos) {
          endPos--;
        }
        endPos = Utilities.getRowEnd(doc, endPos);
      } else { // selection not visible
        startPos = Utilities.getRowStart(doc, caret.getDot());
        endPos = Utilities.getRowEnd(doc, caret.getDot());
      }
      int lineCount = Utilities.getRowCount(doc, startPos, endPos);
      boolean comment = forceComment != null ? forceComment : !allComments(doc, startPos, lineCount);
      if (comment) {
        comment(doc, startPos, lineCount);
      } else {
        uncomment(doc, startPos, lineCount);
      }
    } catch (BadLocationException e) {
      target.getToolkit().beep();
    }
  }
});

代码示例来源：origin: org.netbeans.modules/org-netbeans-modules-gsf-testrunner-ui

@Override
public void paint(Graphics g, Shape a) {
  ((Graphics2D) g).addRenderingHints(getHints());
  Container container = getContainer();
  if (container instanceof JTextComponent) {
    final JTextComponent textComp = (JTextComponent) container;
    selStart = textComp.getSelectionStart();
    selEnd = textComp.getSelectionEnd();
    unselectedFg = textComp.isEnabled()
        ? textComp.getForeground()
        : textComp.getDisabledTextColor();
    selectedFg = textComp.getCaret().isSelectionVisible()
        ? textComp.getSelectedTextColor()
        : unselectedFg;
  }
  super.paint(g, a);
}

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