/**
* Abstract base implementation for {@link IWebPage}.
*
* @author Philip Helger
*/
public abstract class AbstractWebPage<WPECTYPE extends IWebPageExecutionContext>
extends AbstractPage implements IWebPage<WPECTYPE> {
/** The CSS class to be applied to the help div */
public static final ICSSClassProvider CSS_PAGE_HELP_ICON =
DefaultCSSClassProvider.create("page_help_icon");
private IWebPageIcon m_aIcon;
/**
* Constructor
*
* @param sID The unique page ID. May not be <code>null</code>.
*/
public AbstractWebPage(@Nonnull @Nonempty final String sID) {
super(sID);
}
/**
* Constructor
*
* @param sID The unique page ID. May not be <code>null</code>.
* @param sName The constant (non-translatable) name of the page. May not be <code>null</code>.
*/
public AbstractWebPage(@Nonnull @Nonempty final String sID, @Nonnull final String sName) {
super(sID, sName);
}
/**
* Constructor
*
* @param sID The unique page ID. May not be <code>null</code>.
* @param sName The constant (non-translatable) name of the page. May not be <code>null</code>.
* @param sDescription The constant (non-translatable) description of the page. May be <code>null
* </code>.
*/
public AbstractWebPage(
@Nonnull @Nonempty final String sID,
@Nonnull final String sName,
@Nullable final String sDescription) {
super(sID, sName, sDescription);
}
/**
* Constructor
*
* @param sID The unique page ID. May not be <code>null</code>.
* @param aName The name of the page. May not be <code>null</code>.
*/
public AbstractWebPage(
@Nonnull @Nonempty final String sID, @Nonnull final IReadonlyMultiLingualText aName) {
super(sID, aName);
}
/**
* Constructor
*
* @param sID The unique page ID. May not be <code>null</code>.
* @param aName The name of the page. May not be <code>null</code>.
* @param aDescription Optional description of the page. May be <code>null</code>.
*/
public AbstractWebPage(
@Nonnull @Nonempty final String sID,
@Nonnull final IReadonlyMultiLingualText aName,
@Nullable final IReadonlyMultiLingualText aDescription) {
super(sID, aName, aDescription);
}
@Nullable
public IWebPageIcon getIcon() {
return m_aIcon;
}
@Nonnull
public AbstractWebPage<WPECTYPE> setIcon(@Nullable final IWebPageIcon aIcon) {
m_aIcon = aIcon;
return this;
}
@Nullable
@OverrideOnDemand
public String getHeaderText(@Nonnull final WPECTYPE aWPEC) {
return getDisplayText(aWPEC.getDisplayLocale());
}
@Nullable
@OverrideOnDemand
public IHCNode getHeaderNode(@Nonnull final WPECTYPE aWPEC) {
final String sText = getHeaderText(aWPEC);
if (StringHelper.hasNoText(sText)) return null;
return HCH1.create(sText);
}
@Nonnull
public static final IRequestWebScopeWithoutResponse getScope() {
return WebScopeManager.getRequestScope();
}
/** @return A form that links to the current page. */
@Nonnull
@Deprecated
public HCForm createFormSelf() {
return new HCForm(LinkUtils.getSelfHref());
}
/** @return A form that links to the current page. */
@Nonnull
public HCForm createFormSelf(@Nonnull final ILayoutExecutionContext aLEC) {
return new HCForm(aLEC.getSelfHref());
}
/** @return A file upload form that links to the current page. */
@Nonnull
@Deprecated
public HCForm createFormFileUploadSelf() {
final HCForm aForm = createFormSelf();
aForm.setFileUploadEncType();
return aForm;
}
/** @return A file upload form that links to the current page. */
@Nonnull
public HCForm createFormFileUploadSelf(@Nonnull final ILayoutExecutionContext aLEC) {
final HCForm aForm = createFormSelf(aLEC);
aForm.setFileUploadEncType();
return aForm;
}
/**
* Check some pre-requisites. This is called as the very first action on each page view.
*
* @param aWPEC The web page execution context
* @return Never <code>null</code>.
*/
@OverrideOnDemand
@Nonnull
protected EValidity isValidToDisplayPage(@Nonnull final WPECTYPE aWPEC) {
return EValidity.VALID;
}
/**
* This method is called before the main {@link #fillContent(IWebPageExecutionContext)} method is
* called.
*/
@OverrideOnDemand
protected void beforeFillContent() {}
/**
* Abstract method to be implemented by subclasses, that creates the main page content, without
* the help icon.
*
* @param aWPEC The web page execution context. Never <code>null</code>.
*/
protected abstract void fillContent(@Nonnull WPECTYPE aWPEC);
/**
* This method is called after the main {@link #fillContent(IWebPageExecutionContext)} method is
* called.
*/
@OverrideOnDemand
protected void afterFillContent() {}
/**
* Get the help URL of the current page
*
* @param aRequestScope The request web scope to be used. Required for cookie-less handling. May
* not be <code>null</code>.
* @param aDisplayLocale The current display locale. Never <code>null</code>.
* @return The help URL for this page. May not be <code>null</code>.
*/
@Nonnull
@OverrideOnDemand
protected ISimpleURL getHelpURL(
@Nonnull final IRequestWebScopeWithoutResponse aRequestScope,
@Nonnull final Locale aDisplayLocale) {
return LinkUtils.getURLWithContext(
aRequestScope, "help/" + getID(), new SMap().add("locale", aDisplayLocale.toString()));
}
/**
* Create the HC node to represent the help icon. This method is only called, if help is available
* for this page. The created code looks like this by default:<br>
* <code>
* <a href="<i>helpURL</i>" title="Show help for page <i>pageName</i>" target="simplehelpwindow"><br>
* <span class="page_help_icon"></span><br>
* </a></code>
*
* @param aWPEC The web page execution context
* @return The created help icon node. May be <code>null</code>.
*/
@Nullable
@OverrideOnDemand
protected IHCNode getHelpIconNode(@Nonnull final WPECTYPE aWPEC) {
final IRequestWebScopeWithoutResponse aRequestScope = aWPEC.getRequestScope();
final Locale aDisplayLocale = aWPEC.getDisplayLocale();
final HCA aHelpNode = new HCA(getHelpURL(aRequestScope, aDisplayLocale));
final String sPageName = getDisplayText(aDisplayLocale);
aHelpNode.setTitle(
EWebBasicsText.PAGE_HELP_TITLE.getDisplayTextWithArgs(aDisplayLocale, sPageName));
aHelpNode.addChild(new HCSpan().addClass(CSS_PAGE_HELP_ICON));
aHelpNode.setTarget(new HCA_Target(HELP_WINDOW_NAME));
return aHelpNode;
}
/**
* Check if is help is available for the current execution context
*
* @param aWPEC The web page execution context
* @return <code>true</code> if help is available, <code>false</code> if not
*/
@OverrideOnDemand
public boolean isHelpAvailable(@Nonnull final WPECTYPE aWPEC) {
return false;
}
/**
* Overridable method to attach the help node to the page. This is called as the last action.
*
* @param aWPEC The web page execution context. Never <code>null</code>.
* @param aHelpNode The help node to be inserted. Never <code>null</code>.
*/
@OverrideOnDemand
protected void insertHelpNode(@Nonnull final WPECTYPE aWPEC, @Nonnull final IHCNode aHelpNode) {
// Add the help icon as the first child of the resulting node list
aWPEC.getNodeList().addChild(0, aHelpNode);
}
/**
* Default implementation calling the abstract {@link #fillContent(IWebPageExecutionContext)}
* method and creating the help node if desired.
*/
public final void getContent(@Nonnull final WPECTYPE aWPEC) {
if (isValidToDisplayPage(aWPEC).isValid()) {
// "before"-callback
beforeFillContent();
// Create the main page content
fillContent(aWPEC);
// "after"-callback
afterFillContent();
}
// Is help available for this page?
if (isHelpAvailable(aWPEC)) {
final IHCNode aHelpNode = getHelpIconNode(aWPEC);
if (aHelpNode != null) insertHelpNode(aWPEC, aHelpNode);
}
}
}
public abstract class AbstractWebPageExt<WPECTYPE extends IWebPageExecutionContext>
extends AbstractWebPage<WPECTYPE> {
/** The width of a single action column in pixels */
public static final int DEFAULT_ACTION_COL_WIDTH = 20;
@Deprecated public static final int ACTION_COL_WIDTH = DEFAULT_ACTION_COL_WIDTH;
public static final String ACTION_CANCEL = "cancel";
public static final String ACTION_COLLAPSE = CHCParam.ACTION_COLLAPSE;
public static final String ACTION_COPY = "copy";
public static final String ACTION_CREATE = CHCParam.ACTION_CREATE;
public static final String ACTION_DELETE = CHCParam.ACTION_DELETE;
public static final String ACTION_DELETE_ALL = "delete-all";
public static final String ACTION_EDIT = CHCParam.ACTION_EDIT;
public static final String ACTION_EXPAND = CHCParam.ACTION_EXPAND;
public static final String ACTION_PERFORM = CHCParam.ACTION_PERFORM;
public static final String ACTION_SAVE = CHCParam.ACTION_SAVE;
public static final String ACTION_UNDELETE = "undelete";
public static final String ACTION_UNDELETE_ALL = "undelete-all";
public static final String ACTION_VIEW = CHCParam.ACTION_VIEW;
protected static final ICSSClassProvider CSS_CLASS_LEFT = WebBasicsCSS.CSS_CLASS_LEFT;
protected static final ICSSClassProvider CSS_CLASS_CENTER = WebBasicsCSS.CSS_CLASS_CENTER;
protected static final ICSSClassProvider CSS_CLASS_RIGHT = WebBasicsCSS.CSS_CLASS_RIGHT;
protected static final ICSSClassProvider CSS_CLASS_ACTION_COL = WebBasicsCSS.CSS_CLASS_ACTION_COL;
protected static final ICSSClassProvider CSS_CLASS_EMPTY_ACTION =
DefaultCSSClassProvider.create("empty-action");
private static int s_nActionColWidth = DEFAULT_ACTION_COL_WIDTH;
public AbstractWebPageExt(@Nonnull @Nonempty final String sID, @Nonnull final String sName) {
super(sID, sName);
}
public AbstractWebPageExt(
@Nonnull @Nonempty final String sID, @Nonnull final IReadonlyMultiLingualText aName) {
super(sID, aName);
}
public AbstractWebPageExt(
@Nonnull @Nonempty final String sID,
@Nonnull final String sName,
@Nullable final String sDescription) {
super(sID, sName, sDescription);
}
public AbstractWebPageExt(
@Nonnull @Nonempty final String sID,
@Nonnull final IReadonlyMultiLingualText aName,
@Nullable final IReadonlyMultiLingualText aDescription) {
super(sID, aName, aDescription);
}
@Nonnull
public static final IWebPageStyler getStyler() {
return WebPageStylerManager.getStyler();
}
@Nonnegative
public static int getActionColWidth() {
return s_nActionColWidth;
}
public static void setActionColWidth(@Nonnegative final int nActionColWidth) {
s_nActionColWidth = nActionColWidth;
}
/**
* Create a HCCol (table column) for the specified number of actions. Each action represents a
* width of {@link #getActionColWidth()} pixels. At least the width of 3 actions is displayed, so
* that the header text fits :)
*
* @param nActions Number of actions. Must be ≥ 0.
* @return The column with the according column width.
*/
@Nonnull
public static HCCol createActionCol(@Nonnegative final int nActions) {
// Assume each action icon is 20 pixels (incl. margin) - at least 3 column
// widths are required for the header
final int nWidth = getActionColWidth() * Math.max(3, nActions);
return new HCCol(nWidth);
}
@Nonnull
public static HCSpan createEmptyAction() {
return new HCSpan()
.addClass(CSS_CLASS_EMPTY_ACTION)
.addStyle(CCSSProperties.DISPLAY_INLINE_BLOCK)
.addStyle(CCSSProperties.WIDTH.newValue(ECSSUnit.px(16)));
}
@Nonnull
public static SimpleURL createCreateURL(
@Nonnull final ILayoutExecutionContext aLEC, @Nonnull final String sMenuItemID) {
return aLEC.getLinkToMenuItem(sMenuItemID).add(CHCParam.PARAM_ACTION, ACTION_CREATE);
}
@Nonnull
public static SimpleURL createCreateURL(@Nonnull final ILayoutExecutionContext aLEC) {
return aLEC.getSelfHref().add(CHCParam.PARAM_ACTION, ACTION_CREATE);
}
@Nonnull
public static SimpleURL createViewURL(
@Nonnull final ILayoutExecutionContext aLEC, @Nonnull final IHasID<String> aCurObject) {
return aLEC.getSelfHref()
.add(CHCParam.PARAM_ACTION, ACTION_VIEW)
.add(CHCParam.PARAM_OBJECT, aCurObject.getID());
}
@Nonnull
public static <T extends IHasID<String> & IHasDisplayName> HCA createEditLink(
@Nonnull final ILayoutExecutionContext aLEC, @Nonnull final T aCurObject) {
return createEditLink(aLEC, aCurObject, (Map<String, String>) null);
}
@Nonnull
public static <T extends IHasID<String> & IHasDisplayName> HCA createEditLink(
@Nonnull final ILayoutExecutionContext aLEC,
@Nonnull final T aCurObject,
@Nullable final Map<String, String> aParams) {
return createEditLink(
aLEC,
aCurObject,
EWebPageText.OBJECT_EDIT.getDisplayTextWithArgs(
aLEC.getDisplayLocale(), aCurObject.getDisplayName()),
aParams);
}
@Nonnull
public static IHCNode getEditImg() {
return EDefaultIcon.EDIT.getIcon().getAsNode();
}
@Nonnull
public static SimpleURL createEditURL(
@Nonnull final ILayoutExecutionContext aLEC, @Nonnull final IHasID<String> aCurObject) {
return aLEC.getSelfHref()
.add(CHCParam.PARAM_ACTION, ACTION_EDIT)
.add(CHCParam.PARAM_OBJECT, aCurObject.getID());
}
@Nonnull
public static HCA createEditLink(
@Nonnull final ILayoutExecutionContext aLEC,
@Nonnull final IHasID<String> aCurObject,
@Nullable final String sTitle) {
return createEditLink(aLEC, aCurObject, sTitle, (Map<String, String>) null);
}
@Nonnull
public static HCA createEditLink(
@Nonnull final ILayoutExecutionContext aLEC,
@Nonnull final IHasID<String> aCurObject,
@Nullable final String sTitle,
@Nullable final Map<String, String> aParams) {
final ISimpleURL aEditURL = createEditURL(aLEC, aCurObject).addAll(aParams);
return new HCA(aEditURL).setTitle(sTitle).addChild(getEditImg());
}
@Nonnull
public static <T extends IHasID<String> & IHasDisplayName> HCA createCopyLink(
@Nonnull final ILayoutExecutionContext aLEC, @Nonnull final T aCurObject) {
return createCopyLink(
aLEC,
aCurObject,
EWebPageText.OBJECT_COPY.getDisplayTextWithArgs(
aLEC.getDisplayLocale(), aCurObject.getDisplayName()));
}
@Nonnull
public static IHCNode getCopyImg() {
return EDefaultIcon.COPY.getIcon().getAsNode();
}
@Nonnull
public static SimpleURL createCopyURL(
@Nonnull final ILayoutExecutionContext aLEC, @Nonnull final IHasID<String> aCurObject) {
return aLEC.getSelfHref()
.add(CHCParam.PARAM_ACTION, ACTION_COPY)
.add(CHCParam.PARAM_OBJECT, aCurObject.getID());
}
@Nonnull
public static HCA createCopyLink(
@Nonnull final ILayoutExecutionContext aLEC,
@Nonnull final IHasID<String> aCurObject,
@Nullable final String sTitle) {
final ISimpleURL aCopyURL = createCopyURL(aLEC, aCurObject);
return new HCA(aCopyURL).setTitle(sTitle).addChild(getCopyImg());
}
@Nonnull
public static <T extends IHasID<String> & IHasDisplayName> HCA createDeleteLink(
@Nonnull final ILayoutExecutionContext aLEC, @Nonnull final T aCurObject) {
return createDeleteLink(
aLEC,
aCurObject,
EWebPageText.OBJECT_DELETE.getDisplayTextWithArgs(
aLEC.getDisplayLocale(), aCurObject.getDisplayName()));
}
@Nonnull
public static IHCNode getDeleteImg() {
return EDefaultIcon.DELETE.getIcon().getAsNode();
}
@Nonnull
public static SimpleURL createDeleteURL(
@Nonnull final ILayoutExecutionContext aLEC, @Nonnull final IHasID<String> aCurObject) {
return aLEC.getSelfHref()
.add(CHCParam.PARAM_ACTION, ACTION_DELETE)
.add(CHCParam.PARAM_OBJECT, aCurObject.getID());
}
@Nonnull
public static HCA createDeleteLink(
@Nonnull final ILayoutExecutionContext aLEC,
@Nonnull final IHasID<String> aCurObject,
@Nullable final String sTitle) {
final ISimpleURL aURL = createDeleteURL(aLEC, aCurObject);
return new HCA(aURL).setTitle(sTitle).addChild(getDeleteImg());
}
@Nonnull
public static SimpleURL createUndeleteURL(
@Nonnull final ILayoutExecutionContext aLEC, @Nonnull final IHasID<String> aCurObject) {
return aLEC.getSelfHref()
.add(CHCParam.PARAM_ACTION, ACTION_UNDELETE)
.add(CHCParam.PARAM_OBJECT, aCurObject.getID());
}
@Nonnull
public static IHCNode getCreateImg() {
return EDefaultIcon.NEW.getIcon().getAsNode();
}
@Nonnull
public static HCA createNestedCreateLink(
@Nonnull final ILayoutExecutionContext aLEC,
@Nonnull final IHasID<String> aCurObject,
@Nullable final String sTitle) {
final ISimpleURL aURL = createCreateURL(aLEC).add(CHCParam.PARAM_OBJECT, aCurObject.getID());
return new HCA(aURL).setTitle(sTitle).addChild(getCreateImg());
}
}