/* 
    P/P   *  Method: com.dmdirc.addons.ui_swing.actions.PasteAction__static_init
          */
     1  /*
     2   * Copyright (c) 2006-2009 Chris Smith, Shane Mc Cormack, Gregory Holmes
     3   *
     4   * Permission is hereby granted, free of charge, to any person obtaining a copy
     5   * of this software and associated documentation files (the "Software"), to deal
     6   * in the Software without restriction, including without limitation the rights
     7   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     8   * copies of the Software, and to permit persons to whom the Software is
     9   * furnished to do so, subject to the following conditions:
    10   *
    11   * The above copyright notice and this permission notice shall be included in
    12   * all copies or substantial portions of the Software.
    13   *
    14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    20   * SOFTWARE.
    21   */
    22  
    23  package com.dmdirc.addons.ui_swing.actions;
    24  
    25  import java.awt.Toolkit;
    26  import java.awt.datatransfer.DataFlavor;
    27  import java.awt.datatransfer.Transferable;
    28  import java.awt.event.ActionEvent;
    29  
    30  import javax.swing.AbstractAction;
    31  import javax.swing.text.JTextComponent;
    32  
    33  /**
    34   * Paste action.
    35   */
    36  public final class PasteAction extends AbstractAction {
    37      
    38      /**
    39       * A version number for this class. It should be changed whenever the class
    40       * structure is changed (or anything else that would prevent serialized
    41       * objects being unserialized with the new class).
    42       */
    43      private static final long serialVersionUID = 1;
    44      
    45      /** Text component to be acted upon. */
    46      private final JTextComponent comp;
    47      
    48      /**
    49       * Instantiates a new paste action.
    50       *
    51       * @param comp Component to be acted upon
    52       */
    53      public PasteAction(final JTextComponent comp) {
                 /* 
    P/P           *  Method: void com.dmdirc.addons.ui_swing.actions.PasteAction(JTextComponent)
                  * 
                  *  Postconditions:
                  *    this.comp == comp
                  *    init'ed(this.comp)
                  */
    54          super("Paste");
    55          
    56          this.comp = comp;
    57      }
    58      
    59      /**
    60       * {@inheritDoc}
    61       *
    62       * @param e Action event
    63       */
    64      @Override
    65      public void actionPerformed(final ActionEvent e) {
                 /* 
    P/P           *  Method: void actionPerformed(ActionEvent)
                  * 
                  *  Preconditions:
                  *    this.comp != null
                  */
    66          comp.paste();
    67      }
    68      
    69      /** {@inheritDoc} */
    70      @Override
    71      public boolean isEnabled() {
                 /* 
    P/P           *  Method: bool isEnabled()
                  * 
                  *  Preconditions:
                  *    this.comp != null
                  * 
                  *  Presumptions:
                  *    java.awt.Toolkit:getDefaultToolkit(...)@73 != null
                  *    java.awt.Toolkit:getSystemClipboard(...)@73 != null
                  *    java.awt.datatransfer.Clipboard:getContents(...)@73 != null
                  *    init'ed(java.awt.datatransfer.DataFlavor.stringFlavor)
                  * 
                  *  Postconditions:
                  *    init'ed(return_value)
                  * 
                  *  Test Vectors:
                  *    javax.swing.text.JTextComponent:isEditable(...)@72: {0}, {1}
                  *    javax.swing.text.JTextComponent:isEnabled(...)@72: {0}, {1}
                  */
    72          if (comp.isEditable() && comp.isEnabled()) {
    73              final Transferable contents = Toolkit.getDefaultToolkit().
    74                      getSystemClipboard().getContents(this);
    75              return contents.isDataFlavorSupported(DataFlavor.stringFlavor);
    76          } else {
    77              return false;
    78          }
    79      }
    80  }