I need to create a graph where the edge width is based on one of the edge property values. By looking at https://github.com/cytoscape/cytoscape.js/wiki/StyleObject, I see Cytoscape has a discreteMapper/passthroughMapper/continuousMapper but none of these let me access the edge properties. However, looking at the source code there's also a customMapper, which based on previous Cytoscape documentation(http://cytoscapeweb.cytoscape.org/documentation/mappers) would allow me to access the edge properties and return the width based on them. How do I do this? Inside the style object I tried:
...
width: { customMapper: { functionName: "widthMapper" } },
...
and
var widthMapper = function(data)
{
console.log(data);
};
before the initialization call. By setting a breakpoint to the function I see it never gets called. What am I doing wrong, do I need to add the mapper function somewhere in the Cytoscape object so it can see it?
the right syntax was
...
width: { customMapper: widthMapper },
...
Related
I extend a Control to create a new custom control in UI5 and this control renders a tree as UL items nicely. Now I need to implement a collapse/expand within that tree. Hence my renderer writes a tag like
<a class="json-toggle" onclick="_ontoggle"></a>
and within that _ontoggle function I will handle the collapse/expand logic.
No matter where I place the _ontoggle function in the control, I get the error "Uncaught ReferenceError: _ontoggle is not defined"
I am missing something obvious but I can't find what it is.
At the moment I have placed a function inside the
return Control.extend("mycontrol",
{_onToggle: function(event) {},
...
Please note that this event is not one the control should expose as new event. It is purely for the internals of how the control reacts to a click event.
I read things about bind and the such but nothing that made sense for this use case.
Took me a few days to crack that, hence would like to provide you with a few pointers.
There are obviously many ways to do that, but I wanted to make that as standard as possible.
The best suggestion I found was to use the ui5 Dialog control as sample. It consists of internal buttons and hence is similar to my requirement: Render something that does something on click.
https://github.com/SAP/openui5/blob/master/src/sap.ui.commons/src/sap/ui/commons/Dialog.js
In short, the solution is
1) The
<a class="json-toggle" href></a>
should not have an onclick. Neither in the tag nor by adding such via jQuery.
2) The control's javascript code should look like:
sap.ui.define(
[ 'sap/ui/core/Control' ],
function(Control) {
var control = Control.extend(
"com.controlname",
{
metadata : {
...
},
renderer : function(oRm, oControl) {
...
},
init : function() {
var libraryPath = jQuery.sap.getModulePath("mylib");
jQuery.sap.includeStyleSheet(libraryPath + "/MyControl.css");
},
onAfterRendering : function(arguments) {
if (sap.ui.core.Control.prototype.onAfterRendering) {
sap.ui.core.Control.prototype.onAfterRendering.apply(this, arguments);
}
},
});
control.prototype.onclick = function (oEvent) {
var target = oEvent.target;
return false;
};
return control;
});
Nothing in the init(), nothing in the onAfterRendering(), renderer() outputs the html. So far there is nothing special.
The only thing related with the onClick is the control.prototype.onclick. The variable "target" is the html tag that was clicked.
I'm using Keen.io ("version": "3.4.1") JavaScript SDK, along with their integration with C3.js, to produce a donut graph by using the code below. However, I don't want percentages, but rather absolute numbers. i.e. Not 25%, but 7.
From reading the docs and looking at examples (see "var c3gauge") and example, I thought you could modify the output by applying the chartOptions. That doesn't seem to be working. At this point, I feel like I'm doing something stupid I'm just not catching.
How do I display absolute values in my donut, not percentages?
var c3donut = new Keen.Dataviz()
.library('c3')
.chartType('donut')
.el(document.getElementById(elem))
.title("Awesome Sauce")
.parseRawData(data)
.chartOptions({
donut: {
label: {
format: function (value) {
console.log("I never fire, why?");
return value;
}
}
}
})
.render();
This is possible with keen-dataviz.js library. I've created a working example here: https://jsfiddle.net/bx9efr4h/1/
Here's part of the code that made it work:
var chart = new Keen.Dataviz()
.el('#chart')
.type("donut")
.chartOptions({
donut: {
label: {
format: function(value) {
return value;
}
}
}
})
.prepare();
keen-js works a little differently because c3.js is not the default dataviz library for it. This is likely why it isn't working like expected for you.
Merry Christmas, everyone!
I want to do something when the source element or target element of a joint.dia.Link is changed. Firstly I tried to put the code in the callback function of 'change:source' and 'change:target' events. However, it turns out that those callback functions are called as soon as the link's position changes, instead of being called when the source element or target element changes. Then I tried to put the code in the LinkView.pointup() function, by adding a tag, which is set in the callback function of 'change:source' and 'change:target' events, to indicate the changed element. The resulted code looks like this:
link.on('change:source', function(){this.src_changed = true;});
link.on('change:target', function(){this.dest_changed = true;});
joint.shapes.custom.ModelLink = joint.dia.Link.extend({
defaults: joint.util.deepSupplement({
type: 'custom.ModelLink',
}, joint.dia.Link.prototype.defaults)
});
joint.shapes.custom.ModelLinkView = joint.dia.LinkView.extend({
pointerdown: function () {
joint.dia.LinkView.prototype.pointerdown.apply(this, arguments);
},
pointermove: function () {
joint.dia.LinkView.prototype.pointermove.apply(this, arguments);
},
pointerup: function (evt, x, y) {
var link = this.model;
if(link.src_changed) { // do something}
if(link.dest_changed) {// do something}
joint.dia.LinkView.prototype.pointerup.apply(this, arguments);
}
});
However, I found src_changed and dest_changed are both set to true sometimes when I am just dragging one end of the link. Why does this happen? How can I fix this? Or any new approach to do some response to the change of source element or target element?
Besides, After I reset the events of joint.shapes.uml.State using model.set('events', events), the text doesnot change on the graph? How can I refresh graph to show the changed state element?
Thanks very much!
The change:source and change:target events are indeed triggered also when the position of the arrowheads changes. In general, the source and target of a link can either be a point (an object with x and y properties) or an element (and in the near future also a link) - an object with id property pointing to the linked element. If you're only interested in source/target being an element, you can just check in your handlers for the change:source and change:target events whether the source/target of the link contains the id property:
if (this.get('source').id) { /*... do something ...*/ }
I want to dynamically add some preconfigured HTML-Elements in use of a 'click'-event with mootools.
So I can make it work with my basic knowledge, although it isn´t very nifty. I coded this so far...
This is my preconfigured element, with some text, a classname and some event, cause i wanna have events already added, when it´s inserted into my container:
var label = new Element('label', {
'text': 'Label',
'class': 'label',
'events': {
'click': function(el){
alert('click');
}
}
});
Here is my function, which adds the label-Element:
function addText(){
$('fb-buildit').addEvent('click', function(){
row.adopt(label, textinput, deletebtn);
$('the-form').adopt(row.clone());
row.empty();
/*
label.clone().inject($('the-form'));
textinput.inject($('the-form'));
deletebtn.inject($('the-form'));
*/
});
}
The second part which uses inject also works, but there, my click-Event, which fires the "alert('click')" works too. The method with adopt doesn´t add any event to my label Object, when its inserted in the dom.
Can anyone help me with this. I just wanna know why adobt ignores my "events" settings and inject doesn´t.
Thanks in advance.
(sorry for my english ^^)
you go label.clone().inject but row.adopt(label) and not row.adopt(label.clone()) -
either way. .clone() does not cloneEvents for you - you need to do that manually.
var myclone = label.clone();
myclone.cloneEvents(label);
row.adopt(label);
this is how it will work
as for why that is, events are stored in the Element storage - which is unique per element. mootools assigns a uid to each element, eg, label = 1, label.clone() -> 2, label.clone() -> 3 etc.
this goes to Storage[1] = { events: ... } and so forth. cloning an element makes for a new element.uid so events don't work unless you implicitly use .cloneEvents()
you are sometimes not doing .clone() which works because it takes the ORIGINAL element along with its storage and events.
suggestion consider looking into event delegation. you could do
formElement.addEvent("click:relay(label.myLabel)", function(e, el) {
alert("hi from "+ el.uid);
});
this means no matter how many new elements you add, as long as they are of type label and class myLabel and children of formElement, the click will always work as the event bubbles to the parent.
I am new to prototype and finding it a lot more difficult than jquery. All i want to do is get the inner html of various classes.
$$('.book').each(function() {
var msg = this.down(".information");
alert(msg.innerHTML);
//new Tip(this, msg.innerHTML, {stem: 'topLeft', hook: { tip: 'topLeft', mouse: true }, offset: { x: 14, y: 14 }});
});
I'm trying to create tooltips for multiple items, but I'm not even getting the alert.
I think you can probably prevent the extra dom work of down() like this:
$$('.book .information').each(function(book) {
alert(book.innerHTML);
});
remember you also have the ability to use advanced CSS2 and CSS3 selectors in prototype like this for example:
$$('.book a[rel]').each(function(el) {
alert(el.rel);
});
see the bottom of this page for more examples http://www.prototypejs.org/api/utility/dollar-dollar
The this variable is not pointing to the element you're iterating over in Prototype, you have to explicitly use a parameter:
$$('.book').each(function(book) {
var msg = book.down(".information");
alert(msg.innerHTML);
});