/*
* Ext GWT - Ext for GWT
* Copyright(c) 2007, 2008, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
package com.extjs.gxt.ui.client.widget.grid;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.extjs.gxt.ui.client.XDOM;
import com.extjs.gxt.ui.client.core.DomHelper;
import com.extjs.gxt.ui.client.core.El;
import com.extjs.gxt.ui.client.core.Template;
import com.extjs.gxt.ui.client.data.ModelData;
import com.extjs.gxt.ui.client.store.ListStore;
import com.extjs.gxt.ui.client.util.Params;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.NodeList;
import com.google.gwt.dom.client.TableSectionElement;
/**
* A <code>GroupingView</code> with support for a summary row.
*/
public class GroupSummaryView extends GroupingView {
protected Template rowTpl, cellTpl;
/**
* Returns the summary node element.
*
* @param g the group element
* @return the summary node
*/
public El getSummaryNode(Element g) {
if (g != null) {
return fly(g).down(".x-grid3-summary-row");
}
return null;
}
/**
* Returns true if summaries are visible.
*
* @return true for visible
*/
public boolean isSummaryVisible() {
return !grid.el().hasStyleName("x-grid-hide-summary");
}
/**
* Toggles the summary information visibility.
*
* @param visible true for visible, false to hide
*/
public void toggleSummaries(boolean visible) {
El el = grid.el();
if (el != null) {
if (visible) {
el.removeStyleName("x-grid-hide-summary");
} else {
el.addStyleName("x-grid-hide-summary");
}
}
}
protected Map<String, Object> calculate(List<ModelData> models, List<ColumnData> cs) {
Map<String, Object> data = new HashMap<String, Object>();
for (int j = 0, jlen = models.size(); j < jlen; j++) {
ModelData m = models.get(j);
for (int i = 0, len = cs.size(); i < len; i++) {
ColumnData c = cs.get(i);
SummaryColumnConfig cf = (SummaryColumnConfig) cm.getColumn(i);
if (cf.getSummaryType() != null) {
data.put(c.name, cf.getSummaryType().render(data.get(c.name), m, c.name, data));
}
}
}
return data;
}
protected void doAllWidths(List<String> ws, String tw) {
NodeList gs = getGroups();
for (int i = 0, len = gs.getLength(); i < len; i++) {
Element s = gs.getItem(i).getChildNodes().getItem(2).cast();
s.getStyle().setProperty("width", tw);
if (s.getFirstChild() == null) return;
s.getFirstChildElement().getStyle().setProperty("width", tw);
TableSectionElement tse = s.getFirstChildElement().cast();
NodeList<Element> cells = (NodeList) tse.getRows().getItem(0).getChildNodes();
for (int j = 0, wlen = ws.size(); j < wlen; j++) {
cells.getItem(j).getStyle().setProperty("width", ws.get(j));
}
}
}
@Override
protected void doGroupEnd(StringBuilder buf, GroupColumnData g, List<ColumnData> cs, int colCount) {
Map data = calculate(g.models, cs);
buf.append("</div>");
buf.append(renderSummary(data, cs));
buf.append("</div>");
}
protected void doWidth(int col, String w, String tw) {
if (!enableGrouping) return;
NodeList gs = getGroups();
for (int i = 0, len = gs.getLength(); i < len; i++) {
Element s = gs.getItem(i).getChildNodes().getItem(2).cast();
s.getStyle().setProperty("width", tw);
s.getFirstChildElement().getStyle().setProperty("width", tw);
TableSectionElement tse = s.getFirstChildElement().cast();
Element e = tse.getRows().getItem(0).getChildNodes().getItem(col).cast();
e.getStyle().setProperty("width", w);
}
}
@Override
protected void initTemplates() {
super.initTemplates();
if (rowTpl == null) {
StringBuffer sb = new StringBuffer();
sb.append("<div class='x-grid3-summary-row' style='{tstyle}'>");
sb.append("<table class='x-grid3-summary-table' border='0' cellspacing='0' cellpadding='0' style='{tstyle}'>");
sb.append("<tbody><tr>{cells}</tr></tbody>");
sb.append("</table></div>");
rowTpl = new Template(sb.toString());
rowTpl.compile();
}
if (cellTpl == null) {
StringBuffer sb = new StringBuffer();
sb.append("<td class='x-grid3-col x-grid3-cell x-grid3-td-{id} {css}' style='{style}'>");
sb.append("<div class='x-grid3-cell-inner x-grid3-col-{id}' unselectable='on'>{value}</div>");
sb.append("</td>");
cellTpl = new Template(sb.toString());
cellTpl.compile();
}
}
@Override
protected void onRemove(ListStore ds, ModelData m, int index, boolean isUpdate) {
super.onRemove(ds, m, index, isUpdate);
if (!isUpdate) {
refreshSummaryById(m.<String> get("_groupId"));
}
}
@Override
protected void onUpdate(ListStore store, ModelData model) {
super.onUpdate(store, model);
refreshSummaryById(model.<String> get("_groupId"));
}
protected void refreshSummaryById(String id) {
Element g = XDOM.getElementById(id);
if (g == null) {
return;
}
List models = grid.store.findModels("_groupId", id);
List<ColumnData> cs = getColumnData();
Map data = calculate(models, cs);
String markup = renderSummary(data, cs);
El existing = getSummaryNode(g);
if (existing != null) {
g.removeChild(existing.dom);
}
DomHelper.append((com.google.gwt.user.client.Element) g, markup);
}
protected String renderSummary(Map<String, Double> data, List<ColumnData> cs) {
StringBuilder buf = new StringBuilder();
int last = cs.size() - 1;
for (int i = 0, len = cs.size(); i < len; i++) {
ColumnData c = cs.get(i);
SummaryColumnConfig cf = (SummaryColumnConfig) cm.getColumn(i);
Params p = new Params();
p.set("id", c.id);
p.set("style", c.style);
String css = i == 0 ? "x-grid3-cell-first " : (i == last ? "x-grid3-cell-last " : "");
p.set("css", css);
if (cf.getSummaryFormat() != null) {
p.set("value", cf.getSummaryFormat().format(data.get(c.name)));
} else if (cf.getSummaryRenderer() != null) {
p.set("value", cf.getSummaryRenderer().render(data.get(c.name), data));
} else {
p.set("value", data.get(c.name));
}
buf.append(cellTpl.applyTemplate(p));
}
Params rp = new Params();
rp.set("tstyle", "width:" + getTotalWidth() + ";");
rp.set("cells", buf.toString());
return rowTpl.applyTemplate(rp);
}
@Override
protected void templateOnAllColumnWidthsUpdated(List<String> ws, String tw) {
super.templateOnAllColumnWidthsUpdated(ws, tw);
doAllWidths(ws, tw);
}
@Override
protected void templateOnColumnHiddenUpdated(int col, boolean hidden, String tw) {
if (!enableGrouping) return;
NodeList gs = getGroups();
String display = hidden ? "none" : "";
for (int i = 0, len = gs.getLength(); i < len; i++) {
Element s = gs.getItem(i).getChildNodes().getItem(2).cast();
s.getStyle().setProperty("width", tw);
s.getFirstChildElement().getStyle().setProperty("width", tw);
TableSectionElement tse = s.getFirstChildElement().cast();
Element e = tse.getRows().getItem(0).getChildNodes().getItem(col).cast();
e.getStyle().setProperty("display", display);
}
}
@Override
protected void templateOnColumnWidthUpdated(int col, String w, String tw) {
super.templateOnColumnWidthUpdated(col, w, tw);
doWidth(col, w, tw);
}
}