JSF-JQuery 2
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This page (revision-6) was last changed on 22-Nov-2017 10:56 by Dieter Käppel

This page was created on 17-Mar-2017 11:26 by Dieter Käppel

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Version Date Modified Size Author Changes ... Change note
6 22-Nov-2017 10:56 19 KB Dieter Käppel to previous
5 22-Nov-2017 10:56 19 KB Dieter Käppel to previous | to last
4 26-Mar-2017 10:37 18 KB Dieter Käppel to previous | to last
3 26-Mar-2017 10:32 17 KB Dieter Käppel to previous | to last
2 26-Mar-2017 10:16 13 KB Dieter Käppel to previous | to last
1 17-Mar-2017 11:26 7 KB Dieter Käppel to last

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JSF-JQuery 2
JSF-JQuery 2

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At line 169 added 233 lines
!!Vis-Network
Vis-Network ist eine Javascript-Bibliothek zum Rendern von Netzwerkdiagrammen mittels HTML5. Im Folgenden ist das entsprechende JQueryWidget aufgezeigt, mit dem die Bibliothenk in JSF integriert wird.
Die Komponente:
{{{
@FacesComponent(namespace = JQueryComponent.NAMESPACE, createTag = true)
@ResourceDependencies({
@ResourceDependency(name = "jquery/jquery.js", library = "primefaces"),
@ResourceDependency(name = "jsf-jquery.js", library = "jquery-js"),
@ResourceDependency(name = "vis.min.js", library = "jquery-js"),
@ResourceDependency(name = "vis-network.js", library = "jquery-js"),
@ResourceDependency(name = "vis.min.css", library = "jquery-css")
})
public class VisNetwork extends JQueryWidget implements ClientBehaviorHolder {
public static class Position {
private int x;
private int y;
public int getX() {
return x;
}
public void setX(int x) {
this.x = x;
}
public int getY() {
return y;
}
public void setY(int y) {
this.y = y;
}
}
public static class NodeEvent extends AjaxBehaviorEvent {
private static final long serialVersionUID = 1L;
private Node node;
private Position position;
public NodeEvent(UIComponent component, Behavior behavior) {
super(component, behavior);
setPhaseId(PhaseId.INVOKE_APPLICATION);
}
public Node getNode() {
return node;
}
public void setNode(Node node) {
this.node = node;
}
public Position getPosition() {
return position;
}
public void setPosition(Position position) {
this.position = position;
}
@Override
public boolean isAppropriateListener(FacesListener facesListener) {
return (facesListener instanceof AjaxBehaviorListener);
}
@Override
public void processListener(FacesListener listener) {
if (listener instanceof AjaxBehaviorListener) {
((AjaxBehaviorListener)listener).processAjaxBehavior(this);
}
}
}
public static final String DEFAULT_EVENT = "click";
public static final Collection<String> EVENT_NAMES = Arrays.asList(DEFAULT_EVENT);
public Boolean getHover() {
return (Boolean)getStateHelper().eval("hover");
}
public void setHover(Boolean hover) {
getStateHelper().put("hover", hover);
}
public String getShape() {
return (String)getStateHelper().eval("shape");
}
public void setShape(String shape) {
getStateHelper().put("shape", shape);
}
public String getBackground() {
return (String)getStateHelper().eval("background");
}
public void setBackground(String background) {
getStateHelper().put("background", background);
}
public String getBorder() {
return (String)getStateHelper().eval("border");
}
public void setBorder(String border) {
getStateHelper().put("border", border);
}
public String getColor() {
return (String)getStateHelper().eval("color");
}
public void setColor(String color) {
getStateHelper().put("color", color);
}
public String getOnclick() {
return (String)getStateHelper().eval("onclick");
}
public void setOnclick(String onclick) {
getStateHelper().put("onclick", onclick);
}
@Override
public Collection<String> getEventNames() {
return EVENT_NAMES;
}
@Override
public String getDefaultEventName() {
return DEFAULT_EVENT;
}
@Override
public String getOptions(Object... properties) {
return super.getOptions("value", "shape", "background", "border", "color", "click");
}
public Node getNode(String id) {
if (id == null)
return null;
for (Node node : ((Network)getValue()).getNodes()) {
if (id.equals(node.getId()))
return node;
}
return null;
}
@Override
public void queueEvent(FacesEvent event) {
Map<String, String> params = getFacesContext().getExternalContext().getRequestParameterMap();
NodeEvent nodeEvent = new NodeEvent(this, ((BehaviorEvent)event).getBehavior());
nodeEvent.setNode(getNode(params.get(getClientId() + ":node")));
nodeEvent.setPosition(JQueryHelper.fromJson(params.get(getClientId() + ":position"), Position.class));
nodeEvent.setPhaseId(event.getPhaseId());
super.queueEvent(nodeEvent);
}
}
}}}
Das JQuery-Widget:
{{{
$.widget("ext.VisNetwork", $.ext.JQueryWidget, {
options: {
hover: true,
shape: "box",
background: "#d7ebf9",
border: "#aed0ea",
color: "#2779aa"
},
_create: function() {
this._super();
this.render();
},
_destroy: function() {
this.cleanup();
this._super();
},
render: function() {
this.cleanup(); // TODO update possible?
this.network = this.createNetwork(this.options.value);
var widget = this;
this.network.on("click", function(param) {
widget.onclick(param);
});
},
cleanup: function() {
if (this.network) {
this.network.off("click");
this.network.destroy();
this.network = null;
}
},
createNetwork: function(data) {
return new vis.Network(this.element[0], data, {
interaction: {
hover: this.options.hover
},
nodes: {
shape: this.options.shape,
color: {
background: this.options.background,
border: this.options.border
},
font: {
color: this.options.color
}
}
});
},
onclick: function(param) {
if (param.nodes.length != 0) {
var data = {};
data[this.element.attr("id") + ":node"] = param.nodes;
data[this.element.attr("id") + ":position"] = $.stringify(param.pointer.DOM);
this.ajaxParam(data);
this.options.click(param);
}
},
onsuccess: function(request, response, options) {
this.network.setData(response);
this.network.redraw();
}
});
}}}
__Erklärung:__ Die Daten für die eigentliche Grafik werden synchorn mit den Options im HTML-Code durch JSF herausgerendert und im HTTP-Dokument-Request übertragen. Natürlich könnte man auch hier über die Action-Funktion gehen und asynchron nachladen, wie dies im Beispiel für Anychart beschrieben wurde. Die Action-Funktion wird hier jedoch für das Klicken auf die Netzwerkknoten genutzt. Daraus wird eine Faces-Behavior erzeugt, mit der man weitere Elemente auf der JSF-Seite steuern kann.
JSF-Seitig sieht es dann so aus:
{{{
<j:visNetwork id="net" value="#{visNetworkController.network}" style="height: 600px;">
<p:ajax listener="#{visNetworkController.action}" update="@this"/>
</j:visNetwork>
}}}
This page (revision-6) was last changed on 22-Nov-2017 10:56 by Dieter Käppel Top
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