/*
* Copyright 2012 The Solmix Project
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.gnu.org/licenses/
* or see the FSF site: http://www.fsf.org.
*/
package org.solmix.sgt.client.pagebar;
import org.solmix.sgt.client.advanceds.JSCallBack;
import org.solmix.sgt.client.advanceds.Roperation;
import org.solmix.sgt.client.advanceds.SlxRPC;
import org.solmix.sgt.client.advanceds.SlxRPCManager;
import com.smartgwt.client.data.Criteria;
import com.smartgwt.client.data.DSCallback;
import com.smartgwt.client.data.DSRequest;
import com.smartgwt.client.data.DSResponse;
import com.smartgwt.client.types.Alignment;
import com.smartgwt.client.types.DSOperationType;
import com.smartgwt.client.types.ExportDisplay;
import com.smartgwt.client.types.ExportFormat;
import com.smartgwt.client.types.ListGridComponent;
import com.smartgwt.client.types.VerticalAlignment;
import com.smartgwt.client.util.SC;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.IButton;
import com.smartgwt.client.widgets.Label;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;
import com.smartgwt.client.widgets.form.DynamicForm;
import com.smartgwt.client.widgets.form.fields.ComboBoxItem;
import com.smartgwt.client.widgets.form.fields.TextItem;
import com.smartgwt.client.widgets.form.fields.events.ChangedEvent;
import com.smartgwt.client.widgets.form.fields.events.ChangedHandler;
import com.smartgwt.client.widgets.form.validator.IntegerRangeValidator;
import com.smartgwt.client.widgets.form.validator.IsIntegerValidator;
import com.smartgwt.client.widgets.grid.ListGrid;
import com.smartgwt.client.widgets.grid.ListGridRecord;
import com.smartgwt.client.widgets.menu.IconMenuButton;
import com.smartgwt.client.widgets.menu.Menu;
import com.smartgwt.client.widgets.menu.MenuItem;
import com.smartgwt.client.widgets.menu.events.MenuItemClickEvent;
import com.smartgwt.client.widgets.toolbar.ToolStrip;
import com.smartgwt.client.widgets.toolbar.ToolStripButton;
/**
*
* @author Administrator
* @version 110035 2012-12-17
*/
public class PagedListGrid extends ListGrid
{
public static final int DEFAULT_PAGE_SIZE = 75;
private boolean usePageBar;
ModalWindow mask;
TopImgButton first = new TopImgButton(16, 16, "[SKIN]actions/first.png", "[SKIN]actions/first-disabled.png");
// 上一页
TopImgButton forward = new TopImgButton(16, 16, "[SKIN]actions/next.png", "[SKIN]actions/next-disabled.png");
// 下一页
TopImgButton backward = new TopImgButton(16, 16, "[SKIN]actions/prev.png", "[SKIN]actions/prev-disabled.png");
// 末页
TopImgButton last = new TopImgButton(16, 16, "[SKIN]actions/last.png", "[SKIN]actions/last-disabled.png");
IntegerRangeValidator v = new IntegerRangeValidator();
// 输入框form
DynamicForm pageForm;
ToolStrip gridPageControls;
// 页码输入框
protected TextItem pageText;
// 总页数
protected Label totalLabel;
// 总页数
protected Label totalRow;
int pageSize;
/**
* 当前页
*/
private int pageNum = -1;
/**
* 总页数
*/
private int totalPage = -1;
/**
* 数据记录条数
*/
private int totalRowNum = -1;
/**
* @return the usePageBar
*/
public boolean isUsePageBar() {
return usePageBar;
}
/**
* @param usePageBar the usePageBar to set
*/
public void setUsePageBar(boolean usePageBar) {
this.usePageBar = usePageBar;
}
/**
* @return the pageSize
*/
public int getPageSize() {
return pageSize;
}
/**
* @param pageSize the pageSize to set
*/
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
/**
* @return the maskMessage
*/
public String getMaskMessage() {
return maskMessage;
}
/**
* @param maskMessage the maskMessage to set
*/
public void setMaskMessage(String maskMessage) {
this.maskMessage = maskMessage;
}
public PagedListGrid(int pageSize)
{
this(null, pageSize, true);
}
public PagedListGrid(boolean showPageBar)
{
this(null, DEFAULT_PAGE_SIZE, showPageBar);
}
public PagedListGrid(int pageSize, boolean showPageBar)
{
this(null, pageSize, showPageBar);
}
private String maskMessage;
private final Canvas maskCanvas;
private final ListGrid owner;
public PagedListGrid(Canvas maskCanvas, int pageSize, boolean usePageBar)
{
this.maskCanvas = maskCanvas;
this.usePageBar = usePageBar;
this.pageSize = pageSize;
this.owner = this;
this.setWidth100();
this.setHeight100();
gridPageControls = new ToolStrip();
gridPageControls.setWidth100();
gridPageControls.setHeight(24);
gridPageControls.setDefaultLayoutAlign(VerticalAlignment.CENTER);
pageText = new TextItem();
pageText.setWidth(50);
pageText.setHeight(20);
pageText.setShowTitle(false);
pageText.setTextAlign(Alignment.RIGHT);
// IntegerRangeValidator
pageText.setValidators(v, new IsIntegerValidator());
pageText.setValidateOnChange(true);
pageText.addChangedHandler(new ChangedHandler() {
@Override
public void onChanged(ChangedEvent event) {
try {
goToPage((Integer.valueOf(pageText.getValueAsString()).intValue()));
} catch (Exception e) {
SC.say(pageText.getValueAsString() + "不是整数");
}
}
});
totalRow = new Label();
totalRow.setWrap(false);
totalRow.setWidth(40);
totalRow.setContents("没有数据");
totalLabel = new Label();
totalLabel.setWrap(false);
totalLabel.setWidth(50);
pageForm = new DynamicForm();
pageForm.setNumCols(1);
pageForm.setWidth(45);
pageForm.setItems(pageText);
// 转到按钮
IButton go = new IButton("转到");
go.setWidth(40);
go.setHeight(20);
Label ye = new Label("第");
ye.setWidth(4);
gridPageControls.setHeight(20);
// gridPageControls.setStyleName("normal");
first.setTitle("首页");
first.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
goToPage(1);
}
});
forward.setTitle("下一页");
forward.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
goToPage(pageNum + 1);
}
});
last.setTitle("最后一页");
last.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
goToPage(totalPage);
}
});
backward.setTitle("上一页");
backward.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
goToPage(pageNum - 1);
}
});
gridPageControls.addSpacer(6);
gridPageControls.addMember(first);
gridPageControls.addSpacer(6);
gridPageControls.addMember(backward);
gridPageControls.addSpacer(6);
// gridPageControls.addMember(go);
gridPageControls.addMember(ye);
gridPageControls.addMember(pageForm);
gridPageControls.addMember(totalLabel);
gridPageControls.addSpacer(6);
gridPageControls.addMember(forward);
gridPageControls.addSpacer(6);
gridPageControls.addMember(last);
gridPageControls.addSeparator();
DynamicForm f = new DynamicForm();
ComboBoxItem pagSize = new ComboBoxItem();
pagSize.setValue(getPageSize());
pagSize.setWidth(60);
pagSize.setTitle("每页");
pagSize.setType("comboBox");
pagSize.setValueMap("75条", "150条", "250条", "500条", "全部");
pagSize.addChangedHandler(new ChangedHandler() {
@Override
public void onChanged(ChangedEvent event) {
Object v = event.getValue();
if ("75条".equals(v)) {
setPageSize(75);
} else if ("150条".equals(v)) {
setPageSize(150);
} else if ("250条".equals(v)) {
setPageSize(250);
} else if ("500条".equals(v)) {
setPageSize(500);
} else if ("全部".equals(v)) {
setPageSize(-1);
setShowAllRecords(true);
}
firstCall = true;
pagedFetchData(_criteria, _callback, _request);
}
});
f.setItems(pagSize);
gridPageControls.addMember(f);
ToolStripButton print = new ToolStripButton();
print.setIcon("[SKIN]actions/print.png");
print.setTitle("打印");
print.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
Canvas.showPrintPreview(owner);
}
});
gridPageControls.addSeparator();
gridPageControls.addMember(print);
gridPageControls.addSeparator();
Menu menu = new Menu();
MenuItem csv = new MenuItem("Excel导出(CSV)");
// excel.setIcon("silk/check.png");
csv.setChecked(true);
csv.addClickHandler(new com.smartgwt.client.widgets.menu.events.ClickHandler() {
@Override
public void onClick(MenuItemClickEvent event) {
exportFunction(ExportFormat.CSV);
}
});
menu.addItem(csv);
MenuItem excel = new MenuItem("Excel导出");
// excel.setIcon("silk/check.png");
excel.addClickHandler(new com.smartgwt.client.widgets.menu.events.ClickHandler() {
@Override
public void onClick(MenuItemClickEvent event) {
exportFunction(ExportFormat.XLS);
}
});
menu.addItem(excel);
MenuItem xml = new MenuItem("XML导出");
xml.addClickHandler(new com.smartgwt.client.widgets.menu.events.ClickHandler() {
@Override
public void onClick(MenuItemClickEvent event) {
exportFunction(ExportFormat.XML);
}
});
menu.addItem(xml);
MenuItem json = new MenuItem("JSON导出");
json.addClickHandler(new com.smartgwt.client.widgets.menu.events.ClickHandler() {
@Override
public void onClick(MenuItemClickEvent event) {
exportFunction(ExportFormat.JSON);
}
});
menu.addItem(json);
IconMenuButton moreExp = new IconMenuButton();
moreExp.addClickHandler(new com.smartgwt.client.widgets.events.ClickHandler() {
@Override
public void onClick(ClickEvent event) {
exportFunction(ExportFormat.CSV);
}
});
moreExp.setTitle("导出");
moreExp.setIcon("[SKIN]actions/export.png");
moreExp.setShowMenuIcon(true);
moreExp.setMenu(menu);
gridPageControls.addMember(moreExp);
gridPageControls.addFill();
gridPageControls.addMember(totalRow);
gridPageControls.setAlign(Alignment.LEFT);
gridPageControls.hide();
this.setGridComponents(new Object[] { ListGridComponent.HEADER, ListGridComponent.FILTER_EDITOR, ListGridComponent.BODY, gridPageControls });
}
public void exportFunction(ExportFormat format) {
if(pageSize>100000){
SC.warn("记录条数大于10万条,请联系管理员!");
}
Roperation operation = new Roperation();
SlxRPC.transform(_request, _criteria, operation);
//export all rows.
operation.setStartRow(-1);
operation.setEndRow(0);
operation.setExportResults(true);
switch (format) {
case XLS:
if(this.pageSize>65534){
SC.warn("记录条数大于65535条,请选择CSV格式导出");
return;
}
operation.setExportFilename("tmp1.xls");
break;
case XML:
operation.setExportFilename("tmp1.XML");
break;
case JSON:
operation.setExportFilename("tmp1.JS");
break;
case CSV:
operation.setExportFilename("tmp1.CSV");
break;
default:
operation.setExportFilename("tmp1.XML");
}
operation.setExportAs(format);
operation.setExportDisplay(ExportDisplay.DOWNLOAD);
SlxRPC.send(operation);
}
private Criteria _criteria;
private DSRequest _request;
private DSCallback _callback;
private boolean firstCall;
/**
* 在smartgwt中 DSRequest中的 operationId 在提交了fetch,add 等操作后，就会从绑定组件上自动生成一个ID,用于区分不同的请求，这里由于是分页每次都应该提交同一个请求。
*/
private String operationId;
protected void pagedFetchData(Criteria criteria, DSCallback dsCallback, DSRequest request) {
pagedFetchData(criteria, dsCallback, request, 1);
}
public void pagedFetchData(Criteria criteria, DSRequest request) {
pagedFetchData(criteria, null, request, 1);
}
protected void pagedFetchData(Criteria criteria, DSCallback dsCallback) {
pagedFetchData(criteria, dsCallback, null);
}
public void pagedFetchData(Criteria criteria) {
pagedFetchData(criteria, null, null);
}
public void pagedFetchData() {
pagedFetchData(null);
}
public void pagedFetchData(Criteria criteria, DSCallback dsCallback, DSRequest request, int pageNum) {
final ListGrid grid = this;
this.pageNum = pageNum;
if (criteria == null)
criteria = this.getCriteria();
final String OperationID = request != null ? request.getOperationId() : null;
this._criteria =criteria!=null? new Criteria(criteria.getJsObj()):new Criteria();
if (dsCallback == null) {
firstCall = true;
dsCallback = new DSCallback() {
@Override
public void execute(DSResponse response, Object rawData, DSRequest request) {
// hold this request.and criteria.
_request = request;
_request.setCriteria(_criteria);
_request.setOperationId(OperationID);
if (response.getStatus() == DSResponse.STATUS_SUCCESS) {
grid.setData(response.getDataAsRecordList());
if (firstCall)
initPageBar(response);
else
updatePageBar(response);
} else if (response.getStatus() == DSResponse.STATUS_VALIDATION_ERROR) {
} else {
SC.warn(response.getDataAsString());
}
firstCall = false;
}
};
}
this._callback = dsCallback;
if (request == null) {
request = new DSRequest();
}
if(_request!=null)
_request.setCriteria(criteria);
if(pageSize>0){
int startNum = (pageNum - 1) * pageSize;
request.setStartRow(startNum);
request.setEndRow(pageNum * pageSize);
}else{
request.setStartRow(-1);
request.setEndRow(0);
}
grid.fetchData(criteria, _callback, _request);
}
private void updatePageBar(DSResponse response) {
int startNum = response.getStartRow() + 1;
int endNum = response.getEndRow();
totalRow.setContents("| " + startNum + "-" + endNum + "条 | 共" + totalRowNum + "条");
pageText.setValue(pageNum);
if (pageNum >= totalPage) {
forward.disable();
last.disable();
}
if (pageNum > 0 && pageNum < totalPage) {
forward.enable();
last.enable();
}
if (pageNum > 1) {
first.enable();
backward.enable();
}
if (pageNum == 1) {
first.disable();
backward.disable();
}
}
private void initPageBar(DSResponse response) {
totalRowNum = response.getTotalRows();
int startNum = response.getStartRow() + 1;
int endNum = response.getEndRow();
if (startNum > endNum)
startNum = endNum;
if (!gridPageControls.isVisible())
gridPageControls.show();
totalRow.setContents("| " + startNum + "-" + endNum + "条 | 共" + totalRowNum + "条");
totalPage = ((totalRowNum % pageSize) == 0) ? totalRowNum / pageSize : totalRowNum / pageSize + 1;
totalLabel.setContents("页,共" + totalPage + "页");
pageNum = 1;
pageText.setValue(pageNum);
first.disable();
backward.disable();
if (totalRowNum > pageSize) {
forward.enable();
last.enable();
} else {
forward.disable();
last.disable();
}
v.setMax(totalPage);
v.setMin(1);
}
/**
* 转到指定页，获取分页数据并装载， 获取数据过程中，加模态遮罩
*
* @param pageNum
*/
public void goToPage(int pageNum) {
if (pageNum > totalPage)
pageNum = totalPage;
if (pageNum < 1)
pageNum = 1;
if (pageNum == this.pageNum) {
return;
}
pagedFetchData(this._criteria, this._callback, this._request, pageNum);
}
public void removeSelectedData(JSCallBack callBack ){
ListGridRecord[] records = getSelectedRecords();
String dsID = getDataSource().getID();
Roperation[] opers;
if (records != null) {
opers = new Roperation[records.length];
for (int i = 0; i < records.length; i++) {
Roperation oper = new Roperation();
oper.setDataSource(dsID);
oper.setOperationType(DSOperationType.REMOVE);
Criteria c = new Criteria();
String[] atrrs = records[i].getAttributes();
for (String atr : atrrs) {
c.addCriteria(atr, records[i].getAttribute(atr));
}
oper.setCriteria(c);
opers[i] = oper;
}
SlxRPCManager.send(opers, callBack);
}
}
}