1 package autotest.common.table; 2 3 import autotest.common.ui.ExtendedListBox; 4 5 import com.google.gwt.event.dom.client.ChangeEvent; 6 import com.google.gwt.event.dom.client.ChangeHandler; 7 import com.google.gwt.json.client.JSONString; 8 import com.google.gwt.json.client.JSONValue; 9 import com.google.gwt.user.client.ui.ListBox; 10 import com.google.gwt.user.client.ui.Widget; 11 12 public class ListFilter extends FieldFilter { 13 protected ListBox select; 14 protected String allValuesText = "All values"; 15 16 public ListFilter(String fieldName) { 17 super(fieldName); 18 select = new ExtendedListBox(); 19 select.setMultipleSelect(isMultipleSelect()); 20 select.setStylePrimaryName("filter-box"); 21 select.addChangeHandler(new ChangeHandler() { 22 public void onChange(ChangeEvent event) { 23 notifyListeners(); 24 } 25 }); 26 } 27 28 /** 29 * Subclasses should override this if they wish to use a multi-select listbox 30 * @return true if and only if the listbox should be multiple select 31 */ 32 protected boolean isMultipleSelect() { 33 return false; 34 } 35 36 /** 37 * Set the text for that option that matches any value for this filter. 38 */ 39 public void setMatchAllText(String text) { 40 allValuesText = text; 41 if (select.getItemCount() > 0) { 42 select.setItemText(0, allValuesText); 43 } 44 } 45 46 @Override 47 public void setExactMatch(boolean isExactMatch) { 48 this.isExactMatch = isExactMatch; 49 } 50 51 protected String getItemText(int index) { 52 return select.getItemText(index); 53 } 54 55 protected String getSelectedText() { 56 int selected = select.getSelectedIndex(); 57 if (selected == -1) { 58 return ""; 59 } 60 return getItemText(selected); 61 } 62 63 @Override 64 public JSONValue getMatchValue() { 65 return new JSONString(getSelectedText()); 66 } 67 68 @Override 69 public boolean isActive() { 70 return select.isEnabled() && !getSelectedText().equals(allValuesText); 71 } 72 73 @Override 74 public Widget getWidget() { 75 return select; 76 } 77 78 public void setChoices(String[] choices) { 79 String selectedValue = null; 80 if (select.getSelectedIndex() != -1) { 81 selectedValue = getSelectedText(); 82 } 83 84 select.clear(); 85 select.addItem(allValuesText); 86 for (int i = 0; i < choices.length; i++) { 87 select.addItem(choices[i]); 88 } 89 90 if (selectedValue != null) { 91 setSelectedChoice(selectedValue); 92 } 93 } 94 95 public void setSelectedChoice(String choice) { 96 for(int i = 0; i < select.getItemCount(); i++) { 97 if(select.getItemText(i).equals(choice)) { 98 select.setSelectedIndex(i); 99 return; 100 } 101 } 102 103 select.addItem(choice); 104 select.setSelectedIndex(select.getItemCount() - 1); 105 } 106 107 public void setEnabled(boolean enabled) { 108 select.setEnabled(enabled); 109 } 110 } 111
