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annotate dwtx/draw2d/AbstractConnectionAnchor.d @ 172:d994a8b2cdf7

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again compile fixes
author Frank Benoit <benoit@tionex.de>
date Wed, 10 Sep 2008 23:14:02 +0200
parents 95307ad235d9
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtx.draw2d.AbstractConnectionAnchor;
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14
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15 import dwt.dwthelper.utils;
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16
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17 import dwtx.draw2d.geometry.Point;
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18 import dwtx.draw2d.ConnectionAnchorBase;
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19 import dwtx.draw2d.AncestorListener;
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20 import dwtx.draw2d.IFigure;
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21 import dwtx.draw2d.AnchorListener;
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22
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23 /**
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24 * Provides support for anchors which depend on a figure for thier location.
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25 * @author hudsonr
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26 */
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27 public abstract class AbstractConnectionAnchor
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28 : ConnectionAnchorBase
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29 , AncestorListener
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30 {
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31
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32 private IFigure owner;
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33
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34 /**
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35 * Constructs an AbstractConnectionAnchor with no owner.
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36 *
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37 * @since 2.0
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38 */
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39 public this() { }
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40
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41 /**
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42 * Constructs an AbstractConnectionAnchor with the owner supplied as input.
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43 *
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44 * @since 2.0
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45 * @param owner Owner of this anchor
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46 */
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47 public this(IFigure owner) {
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48 setOwner(owner);
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49 }
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50
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51 /**
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52 * Adds the given listener to the listeners to be notified of anchor location changes.
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53 *
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54 * @since 2.0
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55 * @param listener Listener to be added
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56 * @see #removeAnchorListener(AnchorListener)
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57 */
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58 public void addAnchorListener(AnchorListener listener) {
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59 if (listener is null)
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60 return;
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61 if (listeners.size() is 0)
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62 getOwner().addAncestorListener(this);
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63 super.addAnchorListener(listener);
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64 }
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65
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66 /**
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67 * Notifies all the listeners of this anchor's location change.
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68 *
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69 * @since 2.0
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70 * @param figure Anchor-owning Figure which has moved
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71 * @see dwtx.draw2d.AncestorListener#ancestorMoved(IFigure)
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72 */
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73 public void ancestorMoved(IFigure figure) {
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74 fireAnchorMoved();
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75 }
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76
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77 /**
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78 * @see dwtx.draw2d.AncestorListener#ancestorAdded(IFigure)
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79 */
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80 public void ancestorAdded(IFigure ancestor) { }
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81
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82 /**
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83 * @see dwtx.draw2d.AncestorListener#ancestorRemoved(IFigure)
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84 */
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85 public void ancestorRemoved(IFigure ancestor) { }
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86
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87 /**
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88 * Returns the owner Figure on which this anchor's location is dependent.
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89 *
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90 * @since 2.0
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91 * @return Owner of this anchor
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92 * @see #setOwner(IFigure)
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93 */
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94 public IFigure getOwner() {
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95 return owner;
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96 }
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97
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98 /**
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99 * Returns the point which is used as the reference by this AbstractConnectionAnchor. It
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100 * is generally dependent on the Figure which is the owner of this
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101 * AbstractConnectionAnchor.
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102 *
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103 * @since 2.0
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104 * @return The reference point of this anchor
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105 * @see dwtx.draw2d.ConnectionAnchor#getReferencePoint()
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106 */
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107 public Point getReferencePoint() {
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108 if (getOwner() is null)
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109 return null;
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110 else {
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111 Point ref_ = getOwner().getBounds().getCenter();
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112 getOwner().translateToAbsolute(ref_);
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113 return ref_;
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114 }
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115 }
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116
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117 /**
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118 * Removes the given listener from this anchor. If all the listeners are removed, then
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119 * this anchor removes itself from its owner.
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120 *
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121 * @since 2.0
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122 * @param listener Listener to be removed from this anchors listeners list
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123 * @see #addAnchorListener(AnchorListener)
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124 */
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125 public void removeAnchorListener(AnchorListener listener) {
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126 super.removeAnchorListener(listener);
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127 if (listeners.size() is 0)
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128 getOwner().removeAncestorListener(this);
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129 }
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130
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131 /**
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132 * Sets the owner of this anchor, on whom this anchors location is dependent.
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133 *
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134 * @since 2.0
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135 * @param owner Owner of this anchor
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136 */
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137 public void setOwner(IFigure owner) {
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138 this.owner = owner;
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139 }
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140
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141 }