1 | /**
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2 | * Format.java
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3 | * Copyright (C) 2010 New Zealand Digital Library, http://expeditee.org
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4 | *
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5 | * This program is free software: you can redistribute it and/or modify
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6 | * it under the terms of the GNU General Public License as published by
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7 | * the Free Software Foundation, either version 3 of the License, or
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8 | * (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 | */
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18 |
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19 | package org.expeditee.agents;
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20 |
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21 | import java.util.ArrayList;
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22 | import java.util.Collection;
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23 | import java.util.Collections;
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24 | import java.util.Comparator;
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25 | import java.util.HashSet;
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26 | import java.util.List;
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27 |
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28 | import org.expeditee.gui.DisplayController;
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29 | import org.expeditee.gui.Frame;
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30 | import org.expeditee.gui.FrameUtils;
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31 | import org.expeditee.items.Item;
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32 | import org.expeditee.items.Text;
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33 |
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34 | /**
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35 | * A simple formatting agent that aligns all non-annotation Items on the given
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36 | * Frame by the X and Y axis of the first Item on the Frame. This agent
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37 | * separates the items into columns, the actual alignment is done by
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38 | * FrameUtils.Align()
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39 | *
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40 | * @author jdm18
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41 | *
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42 | */
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43 | public class Format extends DefaultAgent {
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44 | // whether the Items could be formatted successfully
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45 | private boolean _success = true;
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46 |
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47 | // adjustmen from the default format spacing
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48 | private int _adjust = 0;
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49 |
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50 | public Format() {
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51 | super();
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52 | }
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53 |
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54 | public Format(String param) {
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55 | try {
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56 | if (param.startsWith("+"))
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57 | param = param.substring(1);
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58 | _adjust = Integer.parseInt(param);
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59 | } catch (Exception e) {
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60 | e.printStackTrace();
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61 | }
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62 | }
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63 |
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64 | @Override
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65 | public Frame process(Frame start) {
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66 | // TODO What will happen if user runs the SIMPLE form of this...
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67 | // Does format box need to be disabled?!?!
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68 | // Check the position of the cursor and only format stuff inside the
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69 | // same box as the cursor
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70 | Collection<Text> itemsToFormat = getItemsToFormat(start);
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71 |
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72 | List<Item> changedItems = new ArrayList<Item>();
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73 |
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74 | ArrayList<Item> columnHeads = new ArrayList<Item>();
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75 |
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76 | ArrayList<ArrayList<Text>> columns = new ArrayList<ArrayList<Text>>();
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77 |
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78 | for (Text t : itemsToFormat) {
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79 | int col = findColumn(columnHeads, t);
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80 | // if this is the head of a new column
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81 | if (col < 0) {
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82 | columnHeads.add(t);
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83 | columns.add(new ArrayList<Text>());
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84 | // otherwise the column for this item has already been
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85 | // found set the column to be the one we just added...
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86 | col = columns.size() - 1;
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87 | } else
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88 | columns.get(col).add(t);
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89 | }
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90 |
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91 | // check for empty columns
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92 | int[] clear = new int[columnHeads.size()];
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93 | for (int i = 0; i < columns.size(); i++)
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94 | clear[i] = columns.get(i).size();
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95 |
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96 | // remove empty columns
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97 | for (int i = (clear.length - 1); i >= 0; i--)
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98 | if (clear[i] == 0) {
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99 | columns.remove(i);
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100 | columnHeads.remove(i);
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101 | }
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102 |
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103 | // if there are no columns to align, we are done
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104 | if (columns.size() == 0)
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105 | return null;
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106 |
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107 | // sort the column heads by X position
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108 | Collections.sort(columnHeads, new Comparator<Item>() {
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109 | public int compare(Item o1, Item o2) {
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110 | return o1.getX() - o2.getX();
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111 | }
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112 |
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113 | });
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114 |
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115 | // sort lists by their X axis
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116 | Collections.sort(columns, new Comparator<ArrayList<Text>>() {
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117 | public int compare(ArrayList<Text> o1, ArrayList<Text> o2) {
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118 | if (o2.size() == 0)
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119 | return -10;
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120 |
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121 | if (o1.size() == 0)
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122 | return 10;
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123 |
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124 | Item i1 = o1.get(0);
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125 | Item i2 = o2.get(0);
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126 |
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127 | return (i1.getX() - i2.getX());
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128 | }
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129 |
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130 | });
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131 |
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132 | int res = FrameUtils.Align(columns.get(0), true, _adjust);
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133 | _success = _success && (res >= 0);
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134 |
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135 | for (int i = 0; i < columns.size() - 1; i++) {
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136 | List<Text> list = columns.get(i);
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137 |
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138 | int maxX = 0;
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139 | int maxY = 0;
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140 | for (Item it : list) {
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141 | maxX = Math.max(maxX, it.getX() + it.getBoundsWidth());
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142 | maxY = Math.max(maxY, it.getY() + it.getBoundsHeight());
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143 | }
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144 |
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145 | int xCheck = maxX;
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146 | for (Item it : columns.get(i + 1))
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147 | xCheck = Math.max(xCheck, maxX
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148 | + /* item.getX() + */it.getBoundsWidth());
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149 |
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150 | if (xCheck < DisplayController.getFramePaintAreaWidth()) {
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151 | Item columnHead = columnHeads.get(i + 1);
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152 | if (columnHead.getX() < maxX && columnHead.getY() < maxY) {
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153 | if(columnHead.getX() != maxX && !changedItems.contains(columnHead)) {
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154 | Item copy = columnHead.copy();
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155 | copy.setID(columnHead.getID());
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156 | changedItems.add(copy);
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157 | }
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158 | columnHead.setX(maxX);
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159 | }
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160 |
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161 | for (Item it : columns.get(i + 1)) {
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162 | if (it.getX() < maxX && it.getY() < maxY) {
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163 | if(it.getX() != maxX && !changedItems.contains(it)) {
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164 | Item copy = it.copy();
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165 | copy.setID(it.getID());
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166 | changedItems.add(copy);
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167 | }
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168 | it.setX(maxX);
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169 | }
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170 | }
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171 | }
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172 |
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173 | res = FrameUtils.Align(columns.get(i + 1), true, _adjust, changedItems);
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174 | _success = _success && (res >= 0);
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175 | }
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176 |
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177 | // align all the separate columns
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178 | /*
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179 | * for(ArrayList<Item> l : columns){ int res = FrameUtils.Align(l,
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180 | * true); _success = _success && (res >= 0); }
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181 | */
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182 | start.setChanged(true);
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183 | start.addToUndoMove(changedItems);
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184 | DisplayController.requestRefresh(true);
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185 | return null;
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186 | }
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187 |
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188 | /**
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189 | * Finds which column contains the given Item, and returns the index to the
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190 | * column in the start & end lists. Returns -1 if no column is found that
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191 | * contains the given Item.
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192 | *
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193 | * @param toFind
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194 | * The Item to determine the correct column for
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195 | * @return The index of the column in the lists, or -1 if no column is found
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196 | */
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197 | private int findColumn(ArrayList<Item> columnHeads, Item toFind) {
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198 | for (Item top : columnHeads)
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199 | if (FrameUtils.inSameColumn(top, toFind))
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200 | return columnHeads.indexOf(top);
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201 |
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202 | return -1;
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203 | }
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204 |
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205 | @Override
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206 | protected void finalise(Frame start) {
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207 | if (_success)
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208 | overwriteMessage("Formatting complete.");
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209 | }
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210 |
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211 | @Override
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212 | protected void message(String message) {
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213 | }
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214 |
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215 | @Override
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216 | protected void overwriteMessage(String message) {
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217 | }
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218 |
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219 | /**
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220 | * Gets all the items that need to be formatted. If the user clicks in
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221 | * freeSpace these are all items not enclosed by a rectangle. If the user is
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222 | * formatting the items in a rectangle this is all the items in the
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223 | * rectangle.
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224 | *
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225 | * @param start
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226 | */
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227 | protected Collection<Text> getItemsToFormat(Frame start) {
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228 | Collection<Text> itemsToFormat = FrameUtils.getCurrentTextItems();
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229 |
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230 | // If the cursor is not inside a box...
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231 | if (itemsToFormat.size() < 1) {
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232 | // Add all the items that are in free space
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233 | itemsToFormat = start.getBodyTextItems(true);
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234 | // Remove all the enclosed items
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235 | Collection<Item> seen = new HashSet<Item>();
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236 | for (Item i : start.getVisibleItems()) {
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237 | if (!seen.contains(i) && i.isEnclosed()) {
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238 | seen.addAll(i.getEnclosingDots());
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239 | itemsToFormat.removeAll(i.getEnclosedItems());
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240 | }
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241 | }
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242 | }
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243 | return itemsToFormat;
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244 | }
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245 |
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246 | }
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