GWT 2.5 - ＆gt;我通过扩展EditTextCell创建了Custom NumberCell，但它将amount值视为String。我想在该列中进行列排序，但它的排序类似于String值。
这是我的代码，
package com.skit.compiere.client.widgets.fields;
import static com.google.gwt.dom.client.BrowserEvents.BLUR;
import static com.google.gwt.dom.client.BrowserEvents.DBLCLICK;
import static com.google.gwt.dom.client.BrowserEvents.KEYDOWN;
import static com.google.gwt.dom.client.BrowserEvents.KEYUP;
import java.awt.event.KeyEvent;
import java.util.HashMap;
import java.util.Map;
import com.google.gwt.cell.client.EditTextCell;
import com.google.gwt.cell.client.ValueUpdater;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.EventTarget;
import com.google.gwt.dom.client.InputElement;
import com.google.gwt.dom.client.NativeEvent;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.safehtml.client.SafeHtmlTemplates;
import com.google.gwt.safehtml.client.SafeHtmlTemplates.Template;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.text.shared.SafeHtmlRenderer;
import com.google.gwt.text.shared.SimpleSafeHtmlRenderer;
public class MyNumberEditCell extends EditTextCell
{
Map<Object, MyNumberEditCell.ViewData> viewDataMap = new HashMap<Object, MyNumberEditCell.ViewData>();
private SafeHtmlRenderer<String> renderer;
public boolean editable = true;
public String SelectedValue = null;
ValueUpdater<String> supervalueup ;
Element superparent ;
NativeEvent superevent;
ViewData viewdata;
Context supercontext ;
String supervalue ;
Template template = GWT.create(Template.class);
SafeHtmlBuilder superhtml = new SafeHtmlBuilder();
Context ctx =null;
String val;
int i=-1;
interface Template extends SafeHtmlTemplates {
@Template("<input type=\"text\" value=\"{0}\" tabindex=\"-1\"></input>")
SafeHtml input(String value);
}
public void render(com.google.gwt.cell.client.Cell.Context context,
String value, SafeHtmlBuilder sb) {
super.render(context, value, sb);
}
@Override
public void onBrowserEvent(Context context, Element parent, String value,
NativeEvent event, ValueUpdater<String> valueUpdater) {
if (DBLCLICK.equals(event.getType())) {
super.onBrowserEvent(supercontext, superparent, supervalue, superevent, supervalueup);
}
else if (BLUR.equals(event.getType())) {
// Commit the change. Ensure that we are blurring the input element and
// not the parent element itself.
EventTarget eventTarget = event.getEventTarget();
if (Element.is(eventTarget)) {
Element target = Element.as(eventTarget);
if ("input".equals(target.getTagName().toLowerCase())) {
commit(supercontext, superparent, viewdata, supervalueup);
}
}
}
}
public ViewData getviewData(Object key) {
return (key == null) ? null : viewDataMap.get(key);
}
private void editEvent(Context context, Element parent, String value,
ViewData viewData, NativeEvent event, ValueUpdater<String> valueUpdater) {
String type = event.getType();
System.out.println(type);
boolean keyUp = KEYUP.equals(type);
boolean keyDown = KEYDOWN.equals(type);
// int keyCodes = event.getKeyCode();
// if(event.getKeyCode()==32){
// event.preventDefault();
// return;
// }
if (keyUp || keyDown) {
int keyCode = event.getKeyCode();
if ( keyCode == KeyCodes.KEY_ENTER ||keyCode == KeyCodes.KEY_ESCAPE) {
// Commit the change.
commit(context, parent, viewData, valueUpdater);
}
else if (keyUp && keyCode == KeyCodes.KEY_ESCAPE) {
// Cancel edit mode.
String originalText = viewData.getOriginal();
if (viewData.isEditingAgain()) {
viewData.setText(originalText);
viewData.setEditing(false);
} else {
setviewData(context.getKey(), null);
}
cancel(context, parent, value);
} else {
// Update the text in the view data on each key.
// if(event.getKeyCode()==32){
// viewdata.setText(viewdata.getText()+" ");
// viewdata.setEditing(true);
// }
updateViewData(parent, viewData, true);
}
}
}
@Override
public boolean isEditing(Context context, Element parent, String value) {
SafeHtmlBuilder safehtml = new SafeHtmlBuilder();
return false;
}
private void cancel(Context context, Element parent, String value) {
clearInput(getInputElement(parent));
setValue(context, parent, value);
}
private native void clearInput(Element input) /*-{
if (input.selectionEnd)
input.selectionEnd = input.selectionStart;
else if ($doc.selection)
$doc.selection.clear();
}-*/;
private InputElement getInputElement(Element parent) {
return parent.getFirstChild().<InputElement> cast();
}
private String updateViewData(Element parent, ViewData viewData,
boolean isEditing) {
InputElement input = (InputElement) parent.getFirstChild();
String value = input.getValue();
viewData.setText(value);
viewData.setEditing(isEditing);
return value;
}
private void commit(Context context, Element parent, ViewData viewData,
ValueUpdater<String> valueUpdater) {
String value = updateViewData(parent, viewData, false);
clearInput(getInputElement(parent));
setValue(context, parent, value);
if (valueUpdater != null) {
valueUpdater.update(value);
}
}
public void setValue(Context context, Element parent, String value) {
SafeHtmlBuilder sb = new SafeHtmlBuilder();
renderFields(context, value, sb);
parent.setInnerSafeHtml(sb.toSafeHtml());
}
private void renderFields(com.google.gwt.cell.client.Cell.Context context,
String value, SafeHtmlBuilder sb) {
this.renderer = SimpleSafeHtmlRenderer.getInstance();
Object key = context.getKey();
ViewData viewData = getviewData(key);
if (viewData != null && !viewData.isEditing() && value != null
&& value.equals(viewData.getText())) {
clearViewData(key);
viewData = null;
}
String toRender = value;
if (viewData != null) {
String text = viewData.getText();
if (viewData.isEditing()) {
/*
* Do not use the renderer in edit mode because the value of a text
* input element is always treated as text. SafeHtml isn't valid in the
* context of the value attribute.
*/
sb.append(template.input(value));
return;
} else {
// The user pressed enter, but view data still exists.
toRender = text;
}
}
if (toRender != null && toRender.trim().length() > 0) {
sb.append(renderer.render(toRender));
} else {
/*
* Render a blank space to force the rendered element to have a height.
* Otherwise it is not clickable.
*/
sb.appendHtmlConstant("\u00A0");
}
}
public void setviewData(Object key, ViewData viewData) {
if (key == null) {
return;
}
if (viewData == null) {
clearViewData(key);
} else {
viewDataMap.put(key, viewData);
}
}
static class ViewData {
private boolean isEditing;
/**
* If true, this is not the first edit.
*/
private boolean isEditingAgain;
/**
* Keep track of the original value at the start of the edit, which might be
* the edited value from the previous edit and NOT the actual value.
*/
private String original;
private String text;
/**
* Construct a new ViewData in editing mode.
*
* @param text the text to edit
*/
public ViewData(String text) {
this.original = text;
this.text = text;
this.isEditing = true;
this.isEditingAgain = false;
}
@Override
public boolean equals(Object o) {
if (o == null) {
return false;
}
ViewData vd = (ViewData) o;
return equalsOrBothNull(original, vd.original)
&& equalsOrBothNull(text, vd.text) && isEditing == vd.isEditing
&& isEditingAgain == vd.isEditingAgain;
}
public String getOriginal() {
return original;
}
public String getText() {
return text;
}
@Override
public int hashCode() {
return original.hashCode() + text.hashCode()
+ Boolean.valueOf(isEditing).hashCode() * 29
+ Boolean.valueOf(isEditingAgain).hashCode();
}
public boolean isEditing() {
return isEditing;
}
public boolean isEditingAgain() {
return isEditingAgain;
}
public void setEditing(boolean isEditing) {
boolean wasEditing = this.isEditing;
this.isEditing = isEditing;
// This is a subsequent edit, so start from where we left off.
if (!wasEditing && isEditing) {
isEditingAgain = true;
original = text;
}
}
public void setText(String text) {
this.text = text;
}
private boolean equalsOrBothNull(Object o1, Object o2) {
return (o1 == null) ? o2 == null : o1.equals(o2);
}
}
}