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1 /*******************************************************************************
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2 * Copyright (c) 2005, 2007 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 jface.snippets.wizard.Snippet047WizardWithLongRunningOperation;
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14
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15 import dwtx.jface.viewers.ArrayContentProvider;
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16 import dwtx.jface.viewers.ISelectionChangedListener;
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17 import dwtx.jface.viewers.SelectionChangedEvent;
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18 import dwtx.jface.viewers.TableViewer;
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19 import dwtx.jface.wizard.IWizardPage;
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20 import dwtx.jface.wizard.Wizard;
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21 import dwtx.jface.wizard.WizardDialog;
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22 import dwtx.jface.wizard.WizardPage;
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23 import dwt.DWT;
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24 import dwt.events.SelectionAdapter;
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25 import dwt.events.SelectionEvent;
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26 import dwt.layout.FillLayout;
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27 import dwt.layout.GridData;
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28 import dwt.layout.GridLayout;
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29 import dwt.widgets.Button;
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30 import dwt.widgets.Composite;
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31 import dwt.widgets.Display;
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32 import dwt.widgets.Label;
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33 import dwt.widgets.ProgressBar;
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34 import dwt.widgets.Shell;
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35
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36 import dwt.dwthelper.utils;
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37 import dwt.dwthelper.Runnable;
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38 import dwtx.dwtxhelper.Collection;
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39 import tango.core.Thread;
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40 import tango.text.convert.Format;
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41 import tango.util.log.Trace;
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42
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43 import dwtx.jface.operation.ModalContext;
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44
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45 /**
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46 * Example how to load data from a background thread into a TableViewer
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47 *
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48 * @author Tom Schindl <tom.schindl@bestsolution.at>
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49 * @since 1.0
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50 */
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51 public class Snippet047WizardWithLongRunningOperation {
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52
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53 private static class MyWizard : Wizard {
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54
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55 private int loadingType;
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56
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57 public this(int loadingType) {
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58 this.loadingType = loadingType;
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59 }
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60
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61 /*
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62 * (non-Javadoc)
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63 *
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64 * @see dwtx.jface.wizard.Wizard#addPages()
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65 */
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66 public void addPages() {
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67 addPage(new MyWizardPageThread("Thread Page", loadingType));
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68 addPage(new MyWizardPage("Standard Page"));
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69 }
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70
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71 public bool performFinish() {
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72 return true;
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73 }
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74
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75 /*
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76 * (non-Javadoc)
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77 *
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78 * @see dwtx.jface.wizard.Wizard#canFinish()
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79 */
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80 public bool canFinish() {
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81 IWizardPage[] pages = getPages();
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82 for (int i = 0; i < pages.length; i++) {
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83 if (!pages[i].isPageComplete()) {
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84 return false;
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85 }
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86 }
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87
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88 return true;
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89 }
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90
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91 };
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92
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93 private static class MyWizardPage : WizardPage {
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94
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95 protected this(String pageName) {
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96 super(pageName);
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97 setTitle(pageName);
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98 }
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99
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100 public /+override+/ void createControl(Composite parent) {
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101 Composite comp = new Composite(parent, DWT.NONE);
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102 setControl(comp);
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103 }
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104 }
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105
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106 private static class MyWizardPageThread : WizardPage {
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107 private int loadingType;
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108 private bool loading = true;
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109 private TableViewer v;
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110
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111 protected this(String pageName, int loadingType) {
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112 super(pageName);
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113 this.loadingType = loadingType;
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114 setTitle(pageName);
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115 }
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116
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117 public /+override+/ void createControl(Composite parent) {
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118 auto mt = new MyThread();
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119 mt.parent = parent;
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120
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121 mt.comp = new Composite(parent, DWT.NONE);
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122 mt.comp.setLayout(new GridLayout(1, false));
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123
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124 v = new TableViewer(mt.comp, DWT.FULL_SELECTION);
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125 v.setContentProvider(new ArrayContentProvider!(Object)());
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126 v.getTable().setLayoutData(new GridData(GridData.FILL_BOTH));
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127 v.addSelectionChangedListener(new class ISelectionChangedListener {
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128
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129 public void selectionChanged(SelectionChangedEvent event) {
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130 getWizard().getContainer().updateButtons();
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131 }
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132
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133 });
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134
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135 mt.barContainer = new Composite(mt.comp, DWT.NONE);
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136 mt.barContainer.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
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137 mt.barContainer.setLayout(new GridLayout(2, false));
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138
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139 Label l = new Label(mt.barContainer, DWT.NONE);
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140 l.setText("Loading Data");
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141
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142 mt.bar = new ProgressBar(mt.barContainer,
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143 (loadingType == 1) ? DWT.INDETERMINATE : DWT.NONE);
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144 mt.bar.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
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145
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146 if (loadingType == 2) {
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147 mt.bar.setMaximum(10);
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148 }
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149
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150 setControl(mt.comp);
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151
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152 ModalContext.run( dgRunnable(&mt.threadWork), true, getProgressMonitor(), getShell().getDisplay() );
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153
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154 //Thread t = new Thread(&mt.threadWork);
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155
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156 // t.start();
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157 }
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158 class MyThread {
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159 private Composite parent;
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160 private Composite barContainer;
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161 private Composite comp;
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162 private ProgressBar bar;
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163
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164 private void threadWork(){
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165 if (loadingType == 1) {
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166 try {
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167 Thread.sleep(10.000);
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168 ArrayList ms = new ArrayList();
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169 for (int i = 0; i < 10; i++) {
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170 ms.add(new MyModel(i));
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171 }
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172
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173 if (v.getTable().isDisposed()) {
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174 return;
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175 }
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176
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177 parent.getDisplay().asyncExec(dgRunnable((ArrayList ms_){
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178 v.setInput(ms_);
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179 (cast(GridData) barContainer.getLayoutData()).exclude = true;
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180 comp.layout(true);
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181 }, ms ));
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182 } catch (InterruptedException e) {
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183 // TODO Auto-generated catch block
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184 ExceptionPrintStackTrace(e);
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185 }
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186 } else {
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187 ArrayList ms = new ArrayList();
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188 parent.getDisplay().syncExec( dgRunnable( (ArrayList ms_){
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189 v.setInput(ms_);
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190 }, ms ));
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191
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192 for (int i = 0; i < 10; i++) {
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193 int j = i;
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194 if (v.getTable().isDisposed()) {
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195 return;
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196 }
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197 parent.getDisplay().asyncExec( dgRunnable( (int j_){
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198 MyModel tmp = new MyModel(j_);
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199 v.add(tmp);
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200 ms.add(tmp);
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201 bar.setSelection(j_ + 1);
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202 }, j ));
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203
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204 try {
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205 Thread.sleep(1.000);
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206 } catch (InterruptedException e) {
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207 // TODO Auto-generated catch block
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208 ExceptionPrintStackTrace(e);
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209 }
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210 }
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211
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212 parent.getDisplay().asyncExec(dgRunnable( {
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213
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214 (cast(GridData) barContainer.getLayoutData()).exclude = true;
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215 comp.layout(true);
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216 }));
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217 }
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218
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219 parent.getDisplay().syncExec(dgRunnable( {
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220 loading = false;
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221 getWizard().getContainer().updateButtons();
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222 }));
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223 }
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224 }
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225 public bool isPageComplete() {
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226 return !loading && !v.getSelection().isEmpty();
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227 }
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228
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229 }
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230
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231 private static class MyModel {
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232 private int index;
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233
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234 public this(int index) {
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235 this.index = index;
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236 }
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237
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238 public String toString() {
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239 return Format("Item-{}", index);
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240 }
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241 }
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242
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243 static Shell shell;
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244 public static void main(String[] args) {
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245 Display display = new Display();
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246
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247 shell = new Shell(display);
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248 shell.setLayout(new FillLayout());
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249
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250 Button b = new Button(shell, DWT.PUSH);
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251 b.setText("Load in one Chunk");
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252 b.addSelectionListener(new class SelectionAdapter {
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253
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254 public void widgetSelected(SelectionEvent e) {
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255 WizardDialog dialog = new WizardDialog(shell, new MyWizard(1));
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256 dialog.open();
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257 }
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258
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259 });
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260
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261 b = new Button(shell, DWT.PUSH);
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262 b.setText("Load Item by Item");
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263 b.addSelectionListener(new class SelectionAdapter {
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264
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265 public void widgetSelected(SelectionEvent e) {
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266 WizardDialog dialog = new WizardDialog(shell, new MyWizard(2));
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267 dialog.open();
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268 }
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269
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270 });
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271
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272 shell.open();
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273
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274 while (!shell.isDisposed()) {
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275 if (!display.readAndDispatch())
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276 display.sleep();
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277 }
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278
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279 display.dispose();
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280 }
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281 }
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282
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283 void main(){
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284 Snippet047WizardWithLongRunningOperation.main(null);
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285 }
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