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annotate org.eclipse.draw2d/src/org/eclipse/draw2d/text/InlineFlowLayout.d @ 12:bc29606a740c

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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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children dbfb303e8fb0
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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 org.eclipse.draw2d.text.InlineFlowLayout;
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14
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15 import java.lang.all;
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16 import org.eclipse.draw2d.text.FlowContainerLayout;
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17 import org.eclipse.draw2d.text.FlowFigure;
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18 import org.eclipse.draw2d.text.LineBox;
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19 import org.eclipse.draw2d.text.CompositeBox;
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20 import org.eclipse.draw2d.text.NestedLine;
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21 import org.eclipse.draw2d.text.InlineFlow;
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22
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23 /**
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24 * The layout manager for {@link InlineFlow} figures.
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25 *
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26 * <P>WARNING: This class is not intended to be subclassed by clients.
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27 * @author hudsonr
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28 * @since 2.1
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29 */
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30 public class InlineFlowLayout
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31 : FlowContainerLayout
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32 {
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33
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34 /**
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35 * Creates a new InlineFlowLayout with the given FlowFigure.
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36 * @param flow The FlowFigure
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37 */
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38 public this(FlowFigure flow) {
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39 super(flow);
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40 }
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41
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42 /**
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43 * Adds the given box as a line below the current line.
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44 * @param box the box to add
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45 */
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46 public void addLine(CompositeBox box) {
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47 endLine();
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48 getContext().addLine(box);
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49 }
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50
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51 /**
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52 * @see FlowContainerLayout#createNewLine()
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53 */
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54 protected void createNewLine() {
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55 currentLine = new NestedLine(cast(InlineFlow)getFlowFigure());
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56 setupLine(currentLine);
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57 }
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58
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59 /**
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60 * @see FlowContext#endLine()
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61 */
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62 public void endLine() {
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63 flush();
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64 getContext().endLine();
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65 }
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66
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67 /**
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68 * @see FlowContainerLayout#flush()
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69 */
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70 protected void flush() {
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71 if (currentLine !is null && currentLine.isOccupied()) {
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72 // We want to preserve the state when a linebox is being added
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73 bool sameLine = getContext().getContinueOnSameLine();
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74 getContext().addToCurrentLine(currentLine);
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75 (cast(InlineFlow)getFlowFigure()).getFragments().add(currentLine);
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76 currentLine = null;
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77 getContext().setContinueOnSameLine(sameLine);
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78 }
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79 }
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80
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81 /**
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82 * InlineFlowLayout gets this information from its context.
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83 * @see FlowContext#getContinueOnSameLine()
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84 */
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85 public bool getContinueOnSameLine() {
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86 return getContext().getContinueOnSameLine();
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87 }
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88
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89 /**
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90 * @see FlowContext#getWidthLookahead(FlowFigure, int[])
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91 */
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92 public void getWidthLookahead(FlowFigure child, int result[]) {
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93 List children = getFlowFigure().getChildren();
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94 int index = -1;
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95 if (child !is null)
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96 index = children.indexOf(child);
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97
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98 for (int i = index + 1; i < children.size(); i++)
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99 if ((cast(FlowFigure)children.get(i)).addLeadingWordRequirements(result))
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100 return;
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101
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102 getContext().getWidthLookahead(getFlowFigure(), result);
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103 }
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104
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105 /**
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106 * @see FlowContainerLayout#isCurrentLineOccupied()
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107 */
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108 public bool isCurrentLineOccupied() {
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109 return (currentLine !is null && !currentLine.getFragments().isEmpty())
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110 || getContext().isCurrentLineOccupied();
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111 }
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112
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113 /**
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114 * Clears out all fragments prior to the call to layoutChildren().
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115 */
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116 public void preLayout() {
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117 (cast(InlineFlow)getFlowFigure()).getFragments().clear();
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118 }
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119
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120 /**
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121 * InlineFlow passes this information to its context.
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122 * @see FlowContext#setContinueOnSameLine(bool)
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123 */
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124 public void setContinueOnSameLine(bool value) {
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125 getContext().setContinueOnSameLine(value);
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126 }
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127
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128 /**
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129 * Initializes the given LineBox. Called by createNewLine().
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130 * @param line The LineBox to initialize.
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131 */
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132 protected void setupLine(LineBox line) {
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133 line.setX(0);
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134 line.setRecommendedWidth(getContext().getRemainingLineWidth());
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135 }
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136
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137 }