org.richfaces.component.AbstractDataScroller Maven / Gradle / Ivy
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package org.richfaces.component;
import java.util.List;
import java.util.Map;
import javax.el.ELException;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.component.UIComponentBase;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.FacesEvent;
import org.ajax4jsf.component.IterationStateHolder;
import org.richfaces.DataScrollerUtils;
import org.richfaces.cdk.annotations.Attribute;
import org.richfaces.cdk.annotations.JsfComponent;
import org.richfaces.cdk.annotations.JsfRenderer;
import org.richfaces.cdk.annotations.Tag;
import org.richfaces.cdk.annotations.TagType;
import org.richfaces.component.util.MessageUtil;
import org.richfaces.event.DataScrollerEvent;
import org.richfaces.event.DataScrollerListener;
import org.richfaces.event.DataScrollerSource;
@JsfComponent(
type = AbstractDataScroller.COMPONENT_TYPE,
family = AbstractDataScroller.COMPONENT_FAMILY,
generate = "org.richfaces.component.UIDataScroller",
renderer = @JsfRenderer(type = "org.richfaces.DataScrollerRenderer"),
tag = @Tag(name="dataScroller", handler="org.richfaces.taglib.DataScrollerHandler", type=TagType.Facelets)
)
public abstract class AbstractDataScroller extends UIComponentBase implements DataScrollerSource, IterationStateHolder {
public static final String COMPONENT_TYPE = "org.richfaces.DataScroller";
public static final String COMPONENT_FAMILY = "org.richfaces.DataScroller";
public static final String SCROLLER_STATE_ATTRIBUTE = COMPONENT_TYPE + ":page";
public static final String FIRST_FACET_NAME = "first";
public static final String LAST_FACET_NAME = "last";
public static final String FAST_FORWARD_FACET_NAME = "fastforward";
public static final String FAST_REWIND_FACET_NAME = "fastrewind";
public static final String FIRST_DISABLED_FACET_NAME = "first_disabled";
public static final String LAST_DISABLED_FACET_NAME = "last_disabled";
public static final String PAGEMODE_FULL = "full";
public static final String PAGEMODE_SHORT = "short";
private Integer page;
protected enum PropertyKeys {
boundaryControls, fastControls, fastStep, forComponent, inactiveStyle, selectStyle, inactiveStyleClass, selectStyleClass, scrollerListener, lastPageMode, maxPages, pageIndexVar, pagesVar, renderIfSinglePage, style, styleClass, stepControls
}
@Attribute
public abstract String getLastPageMode();
@Attribute(defaultValue="0")
public abstract int getFastStep();
@Attribute
public abstract String getForComponent();
@Attribute(defaultValue="10")
public abstract int getMaxPages();
@Attribute(defaultValue="show")
public abstract String getBoundaryControls();
@Attribute(defaultValue="show")
public abstract String getFastControls();
public void addScrollerListener(DataScrollerListener listener) {
addFacesListener(listener);
}
public DataScrollerListener[] getScrollerListeners() {
return (DataScrollerListener[]) getFacesListeners(DataScrollerListener.class);
}
public void removeScrollerListener(DataScrollerListener listener) {
removeFacesListener(listener);
}
public void broadcast(FacesEvent event) throws AbortProcessingException {
if (event instanceof DataScrollerEvent) {
DataScrollerEvent dataScrollerEvent = (DataScrollerEvent) event;
updateModel(dataScrollerEvent.getPage());
FacesContext facesContext = getFacesContext();
UIComponent dataTable = getDataTable();
List dataScrollers = DataScrollerUtils.findDataScrollers(dataTable);
for (AbstractDataScroller dataScroller : dataScrollers) {
facesContext.getPartialViewContext().getRenderIds().add(dataScroller.getClientId(facesContext));
}
String dataTableId = null;
if (dataTable instanceof MetaComponentResolver) {
dataTableId = ((MetaComponentResolver) dataTable).resolveClientId(facesContext, dataTable, "body");
}
if (dataTableId == null) {
dataTableId = dataTable.getClientId(facesContext);
}
facesContext.getPartialViewContext().getRenderIds().add(dataTableId);
//add datascroller to render
String dataScrollerId = getClientId(facesContext);
if(!facesContext.getPartialViewContext().getRenderIds().contains(dataScrollerId)) {
facesContext.getPartialViewContext().getRenderIds().add(dataScrollerId);
}
}
super.broadcast(event);
}
/**
* Finds the dataTable which id is mapped to the "for" property
*
* @return the dataTable component
*/
public UIComponent getDataTable() {
return DataScrollerUtils.findDataTable(this);
}
private int getFastStepOrDefault() {
return (Integer) getStateHelper().eval(PropertyKeys.fastStep, 1);
}
public int getPageForFacet(String facetName) {
if (facetName == null) {
throw new NullPointerException();
}
int newPage = 1;
int pageCount = getPageCount();
if (FIRST_FACET_NAME.equals(facetName)) {
newPage = 1;
} else if (LAST_FACET_NAME.equals(facetName)) {
newPage = pageCount > 0 ? pageCount : 1;
} else if (FAST_FORWARD_FACET_NAME.equals(facetName)) {
newPage = getPage() + getFastStepOrDefault();
} else if (FAST_REWIND_FACET_NAME.equals(facetName)) {
newPage = getPage() - getFastStepOrDefault();
} else {
try {
newPage = Integer.parseInt(facetName.toString());
} catch (NumberFormatException e) {
throw new FacesException(e.getLocalizedMessage(), e);
}
}
if (newPage >= 1 && newPage <= pageCount) {
return newPage;
} else {
return 0;
}
}
public int getPageCount(UIComponent data) {
int rowCount = getRowCount(data);
int rows = getRows(data);
return getPageCount(data, rowCount, rows);
}
public int getPageCount(UIComponent data, int rowCount, int rows) {
return DataScrollerUtils.getPageCount(data, rowCount, rows);
}
/** @return the page count of the uidata */
public int getPageCount() {
return getPageCount(getDataTable());
}
public int getRowCount(UIComponent data) {
return (Integer) data.getAttributes().get("rowCount");
}
/** @return int */
public int getRowCount() {
return getRowCount(getDataTable());
}
public int getRows(UIComponent data) {
return DataScrollerUtils.getRows(data);
}
// facet getter methods
public UIComponent getFirst() {
return getFacet(FIRST_FACET_NAME);
}
public UIComponent getLast() {
return getFacetByKey(LAST_FACET_NAME);
}
public UIComponent getFastForward() {
return getFacetByKey(FAST_FORWARD_FACET_NAME);
}
public UIComponent getFastRewind() {
return getFacetByKey(FAST_REWIND_FACET_NAME);
}
private UIComponent getFacetByKey(String key) {
return getFacet(key.toString());
}
private static boolean isRendered(UIComponent component) {
UIComponent c = component;
while (c != null) {
if (!c.isRendered()) {
return false;
}
c = c.getParent();
}
return true;
}
public void setPage(int newPage) {
this.page = newPage;
}
public int getPage() {
UIComponent dataTable = getDataTable();
Map attributes = dataTable.getAttributes();
FacesContext facesContext = getFacesContext();
Integer state = (Integer) attributes.get(dataTable.getClientId(facesContext) + SCROLLER_STATE_ATTRIBUTE);
if (state != null) {
return state;
}
if (this.page != null) {
return page;
}
ValueExpression ve = getValueExpression("page");
if (ve != null) {
try {
Integer pageObject = (Integer) ve.getValue(getFacesContext().getELContext());
if (pageObject != null) {
return pageObject;
}
} catch (ELException e) {
throw new FacesException(e);
}
}
return 1;
}
private void updateModel(int newPage) {
FacesContext facesContext = getFacesContext();
UIComponent dataTable = getDataTable();
if (isRendered(dataTable)) {
dataTable.getAttributes().put("first", (newPage - 1) * getRows(dataTable));
}
Map attributes = dataTable.getAttributes();
attributes.put(dataTable.getClientId(facesContext) + SCROLLER_STATE_ATTRIBUTE, newPage);
ValueExpression ve = getValueExpression("page");
if (ve != null) {
try {
ve.setValue(facesContext.getELContext(), newPage);
attributes.remove(dataTable.getClientId(facesContext) + SCROLLER_STATE_ATTRIBUTE);
} catch (ELException e) {
String messageStr = e.getMessage();
Throwable result = e.getCause();
while (null != result && result.getClass().isAssignableFrom(ELException.class)) {
messageStr = result.getMessage();
result = result.getCause();
}
FacesMessage message;
if (null == messageStr) {
message = MessageUtil.getMessage(facesContext, UIInput.UPDATE_MESSAGE_ID,
new Object[] {MessageUtil.getLabel(facesContext, this) });
} else {
message = new FacesMessage(FacesMessage.SEVERITY_ERROR, messageStr, messageStr);
}
facesContext.getExternalContext().log(message.getSummary(), result);
facesContext.addMessage(getClientId(facesContext), message);
facesContext.renderResponse();
} catch (IllegalArgumentException e) {
FacesMessage message = MessageUtil.getMessage(facesContext, UIInput.UPDATE_MESSAGE_ID,
new Object[] {MessageUtil.getLabel(facesContext, this) });
facesContext.getExternalContext().log(message.getSummary(), e);
facesContext.addMessage(getClientId(facesContext), message);
facesContext.renderResponse();
} catch (Exception e) {
FacesMessage message = MessageUtil.getMessage(facesContext, UIInput.UPDATE_MESSAGE_ID,
new Object[] {MessageUtil.getLabel(facesContext, this) });
facesContext.getExternalContext().log(message.getSummary(), e);
facesContext.addMessage(getClientId(facesContext), message);
facesContext.renderResponse();
}
}
}
public boolean isLocalPageSet() {
return page != null;
}
public void resetLocalPage() {
page = null;
}
public Object getIterationState() {
return this.page;
}
public void setIterationState(Object state) {
this.page = (Integer) state;
}
}
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