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annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/SelectProvider.java @ 20:c128d675386b

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Added UIProviders that are used to create widgets for entering data. flys-client/trunk@1334 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Tue, 22 Feb 2011 17:17:12 +0000
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children 5709bd8f4d7c
rev   line source
20
c128d675386b Added UIProviders that are used to create widgets for entering data.
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1 package de.intevation.flys.client.client.ui;
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2
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3 import java.util.ArrayList;
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4 import java.util.LinkedHashMap;
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5 import java.util.List;
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6
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7 import com.google.gwt.core.client.GWT;
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8
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9 import com.smartgwt.client.widgets.Canvas;
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10 import com.smartgwt.client.widgets.IButton;
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11 import com.smartgwt.client.widgets.events.ClickEvent;
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12 import com.smartgwt.client.widgets.events.ClickHandler;
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13 import com.smartgwt.client.widgets.form.DynamicForm;
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14 import com.smartgwt.client.widgets.form.fields.ComboBoxItem;
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15 import com.smartgwt.client.widgets.layout.VLayout;
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16
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17 import de.intevation.flys.client.shared.model.Data;
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18 import de.intevation.flys.client.shared.model.DataItem;
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19 import de.intevation.flys.client.shared.model.DefaultData;
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20 import de.intevation.flys.client.shared.model.DefaultDataItem;
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21
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22 import de.intevation.flys.client.client.FLYSMessages;
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23 import de.intevation.flys.client.client.event.HasStepForwardHandlers;
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24 import de.intevation.flys.client.client.event.StepForwardEvent;
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25 import de.intevation.flys.client.client.event.StepForwardHandler;
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26
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27
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28 /**
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29 * This UIProvider displays the DataItems of the Data object in a combo box.
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30 *
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31 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
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32 */
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33 public class SelectProvider implements UIProvider, HasStepForwardHandlers,
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34 ClickHandler
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35 {
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36 /** The message class that provides i18n strings.*/
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37 protected FLYSMessages messages = GWT.create(FLYSMessages.class);
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38
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39 /** The StepForwardHandlers.*/
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40 protected List<StepForwardHandler> forwardHandlers;
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41
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42 /** The combobox.*/
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43 protected ComboBoxItem combobox;
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44
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45
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46 /**
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47 * Creates a new UIProvider instance of this class.
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48 */
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49 public SelectProvider() {
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50 forwardHandlers = new ArrayList<StepForwardHandler>();
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51 }
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52
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53
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54 public void addStepForwardHandler(StepForwardHandler handler) {
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55 if (handler != null) {
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56 GWT.log("SelectProvider - addStepForwardHandler()");
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57 forwardHandlers.add(handler);
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58 }
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59
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60 GWT.log("Handlers now: " + forwardHandlers.size());
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61 }
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62
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63
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64 /**
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65 * This method is called after the user has clicked on the 'next' button to
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66 * step to the next state.
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67 *
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68 * @param e The StepForwardEvent.
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69 */
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70 protected void fireStepForwardEvent(StepForwardEvent e) {
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71 GWT.log("SelectProvider - fireStepForwardEvent() handlers: " + forwardHandlers.size());
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72 for (StepForwardHandler handler: forwardHandlers) {
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73 GWT.log("SelectProvider - fireStepForwardEvent()");
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74 handler.onStepForward(e);
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75 }
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76 }
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77
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78 public void onClick(ClickEvent e) {
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79 GWT.log("SelectProvider - feed and advance...");
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80 Data[] data = getData();
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81
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82 GWT.log("GO ON...");
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83 SelectProvider.this.fireStepForwardEvent(new StepForwardEvent(data));
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84 }
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85
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86 /**
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87 * This method currently returns a
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88 * {@link com.smartgwt.client.widgets.form.DynamicForm} that contains all
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89 * data items in a combobox stored in <i>data</i>.
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90 *
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91 * @param data The {@link Data} object.
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92 *
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93 * @return a combobox.
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94 */
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95 public Canvas create(Data data) {
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96 VLayout v = new VLayout();
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97
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98 Canvas content = createWidget(data);
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99
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100 IButton button = new IButton(messages.next(), this);
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101 //IButton button = new IButton(messages.next(), new ClickHandler() {
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102 // public void onClick(ClickEvent e) {
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103 // GWT.log("SelectProvider - feed and advance...");
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104 // Data[] data = getData();
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105
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106 // GWT.log("GO ON...");
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107 // SelectProvider.this.fireStepForwardEvent(new StepForwardEvent(data));
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108 // }
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109 //});
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110
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111 v.addMember(content);
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112 v.addMember(button);
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113
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114 return v;
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115 }
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116
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117
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118 /**
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119 * This method creates the content of the widget.
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120 *
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121 * @param data The {@link Data} object.
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122 *
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123 * @return a combobox.
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124 */
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125 protected Canvas createWidget(Data data) {
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126 GWT.log("SelectProvider - create()");
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127
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128 DynamicForm form = new DynamicForm();
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129 combobox = new ComboBoxItem("river");
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130
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131 LinkedHashMap<String, String> it = new LinkedHashMap<String, String>();
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132
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133 for (DataItem item: data.getItems()) {
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134 GWT.log("Add item: " + item.getLabel());
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135 it.put(item.getStringValue(), item.getLabel());
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136 }
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137
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138 combobox.setValueMap(it);
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139 form.setItems(combobox);
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140
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141 return form;
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142 }
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143
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144
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145 protected Data[] getData() {
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146 String selection = combobox.getValueAsString();
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147
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148 GWT.log("SelectProvider - getData() Selected value = " + selection);
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149 DataItem item = new DefaultDataItem("river", null, selection);
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150
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151 return new Data[] { new DefaultData(
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152 "river", null, null, new DataItem[] { item }, null) };
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153 }
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154 }
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155 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org