I'm using Dojo and would like to create a tree like structure. However, I'd like to be able to display content within the tree once the end node in a particular branch has been expanded. e.g.
top
- a branch
-- last item in this branch
[some content such as a div, span, image etc]
-- another item in this branch
[some more content]
etc
Does anyone know if this can be achieved using dijit Tree and if so, any pointers?
After digging around in the docs I've found a way to do this. It's not simple so thought I'd share. This page has an example of how to display a tree node with a rich text label rather than just text. This involves declaring your own class that inherits from Tree._TreeNode, allowing you to control it's creation. This same technique can be used.
When creating a Tree, I override the _createTreeNode function as follows:
_createTreeNode: function (args) {
if (args.item.type === "content") {
return new LayerManagerContentNode(args);
} else {
return new Tree._TreeNode(args);
}
}
In my store I add an object to represent the content that I want to display inline and give it a type of 'content'.
I create a class that inherits from Tree._TreeNode as follows:
define([
"dojo/_base/declare",
"dojo/_base/lang",
"dojo/dom",
"dojo/dom-construct",
"dojo/on",
"dijit/form/Button",
"dijit/Tree"
], function (declare, lang, dom, domConstruct, on, Button, Tree) {
return declare("my/ui/platforms/desktop/parts/LayerManagerContentNode", [Tree._TreeNode], {
// summary:
// ...
constructor: function () {
},
postCreate: function () {
var button = new Button({
label: "Test"
});
this.domNode.innerHTML = "<div></div>";
this.domNode.innterText = "";
button.placeAt(this.domNode, "first");
}
});
});
in the postCreate, I create a button (this was just for testing, I'll probable create a content pane or something to further populate) to be displayed in place of the usual tree node. I then replace the tree nodes innerHTML and innerText to hide what would normally be displayed, en voila, it works!
I dare say there are better ways to do this so if anyone comes along and has one, please add it.
Related
I have a div, to which I applied Dojo dojo/dnd/Moveable. But, I'd like to prevent the user from dragging the div offscreen. So, I think I need to implement dojo/dnd/move/boxConstrainedMoveable.
I'm starting with this:
var dnd = new Moveable(this.domNode, {
'handle': this.titleNode
});
There's a similar SO question here:
Constrain a moveable object in Dojo. Applying that answer, I get something like this:
var dnd = new move.boxConstrainedMoveable(
'handle': this.titleNode
constraints: {
l: 0,
t: 20,
w: 500,
h: 500
},
within: true
);
But, I just can't understand how the bounding box works. I simply want the div to stay inside the window. I've tried implementing a few things with the window box, the div's margin box. Nothing's worked, and all I've made is a big mess.
I read the docs here:
http://dojotoolkit.org/api/?qs=1.9/dojo/dnd/move.boxConstrainedMoveable
Has anyone done this with Dojo? I'd be very appreciate of an example.
I looked up some old code I have and I did implement this type of movable once. This was written against Dojo 1.7, so things may have changed in 1.9. Fiddle demonstration: https://jsfiddle.net/4ev1daqr/26/
The main difference between your attempted solution and this is that the constraints property in the moveable needs to be a function rather than a static bounding box. When using the boxConstrainedMoveable module, the static bounding box should be assigned to a box property, rather than the constraints property.
This is actually a nice design, IMHO, because it allows the constraints to react to changes in application state, e.g. hiding a sidebar or moving a splitter, but it does make the simple case a bit more difficult to get working.
define(["dojo/_base/declare",
"dojo/dnd/move",
"dojo/dom",
"dojo/_base/window",
"dojo/dom-style",
"dojo/dom-geometry",
],
function (declare, move, dom, win, domStyle, domGeom) {
return declare( "my/dnd/move/BodyConstrainedMoveable", [move.constrainedMoveable], {
markupFactory: function(params, node){
return new this(node, params);
},
constructor: function(node, params) {
// Constrain the node to be within the body
this.constraints = function() {
var n = win.body(),
s = domStyle.getComputedStyle(n),
mb = domGeom.getMarginBox(n, s);
if ( this.node ) {
var menubox = domGeom.getMarginBox(this.node);
mb.w -= menubox.w;
mb.h -= menubox.h;
}
return mb;
};
}
})});
I have a custom widget which extends _WidgetBase, _TemplatedMixin with template
<div dojoAttachPoint="widget">
<div dojoAttachPoint="title">${name}</div>
<div dojoAttachPoint="dnmschart"></div>
</div>
and another widget which extends above widget
require([
'dojo/_base/declare',
'my/widget/view/AbstractWidget'
], function (declare, AbstractWidget) {
return declare("my.widget.view.AbstractChart", [AbstractWidget], {
constructor:function(){
},
buildRendering: function(){
this.inherited(arguments);
var gridDiv = document.createElement("div");
gridDiv.setAttribute("dojoAttachPoint", "gridPlaceHolder");
},
postCreate:function(){
this.inherited(arguments);
//Here I could not get newly created node gridPlaceHolder
console.log(" POST CREATION");
}
});
});
When I print in console (Break point in post create method)
this.domNode
It shows newly created node at last in document(last node in above template)
<div dojoattachpoint="gridPlaceHolder"></div>
But I could not access gridPlaceHolder attach point in post create method.
Is there anything else need to configure?
Please help me on this:)
data-dojo-attach-point (which you should use for 1.6+ instead of dojoAttachPoint) allows you to have handles for dom nodes in your template.. It is parsed by _TemplatedMixin's buildRendering(), so it will be available in your buildRendering method just after this.inherited line.
You can not set data-dojo-attach-point using setAttribute, it can only be defined in templates to be parsed by TemplatedMixin. If you need your child widget to add some markup in addition to what there is in its parent's template, you can define a variable in your parent's markup, and overwrite it in your child widget:
Your AbstractWidget template:
<div data-dojo-attach-point="widget">
<div data-dojo-attach-point="title">${name}</div>
<div data-dojo-attach-point="dnmschart"></div>
${childMarkup}
</div>
And then you need to add your additional markup in child's buildRendering, before this.inherited:
require([
'dojo/_base/declare',
'my/widget/view/AbstractWidget'
], function (declare, AbstractWidget) {
return declare("my.widget.view.AbstractChart", [AbstractWidget], {
buildRendering: function(){
this.childMarkup = '<div data-dojo-attach-point="gridPlaceHolder"></div>';
this.inherited(arguments);
}
});
As stafamus said, the primary problem here is that you're attempting to assign data-dojo-attach-point or dojoAttachPoint to a node after the template has already been parsed (which happens during the this.inherited call in your buildRendering.
Going beyond that, given the code in the original post, it also appears you're never actually adding the markup you create in buildRendering to your widget's DOM at all - you've only created a div that is not attached to any existing DOM tree. I'm a bit confused on this point though, since you claim that you are seeing the markup for the node you added, which shouldn't be possible with the code above, or the code in stafamus' answer.
Rather than attempting to dump extra markup into your template, you might as well do the programmatic equivalent to what an attach point would be doing in this case anyway: create your DOM node, attach it to your widget's DOM, and assign it to this.gridPlaceHolder. e.g.:
buildRendering: function () {
this.inherited(arguments);
this.gridPlaceHolder = document.createElement('div');
this.domNode.appendChild(this.gridPlaceholder);
}
I am following this link http://dojotoolkit.org/reference-guide/1.9/dojox/mobile/SearchBox.html and am trying to do the same in my app. The only difference is that I want to use "onSearch" event using "dojo On" but I am not able to read results, query, options that we get by default in the onSearch function.Please help me in solving this problem.
My HTML code:
<input data-dojo-type="dojox/mobile/SearchBox" type="search" placeHolder="Search"
data-dojo-props='store:store, searchAttr: "label", ignoreCase: true, pageSize:2'>
<ul data-dojo-type="dojox/mobile/RoundRectList" jsId="list"></ul>
My JS code:
define(["dojo/has",
"dojo/_base/declare",
"dojo/_base/lang",
"dojo/_base/array",
"dojo/dom",
"dojo/dom-class",
"dojo/dom-construct",
"dojo/query",
"dojo/dom-style",
"dojo/dom-attr",
"dojo/on",
"dojo/_base/Deferred",
"dojo/topic",
"dojo/_base/connect",
"dijit/registry",
"dojo/store/Memory",
"dojox/mobile/SearchBox",
"dojo/selector/acme"
],
function(has,declare,lang,array,dom,domClass,domConstruct,query,domStyle,domAttr,on,Deferred,topic,connect,registry,MemoryStore,SearchBox)
{
declare("controllers.SearchController", [], {
started:false,
constructor : function(args) {
WL.Logger.debug("SearchController created");
lang.mixin(this,args);
},
start:function(){
if(!this.started)
{
console.log("i am in SearchController.start");
this.subscription();
this.started = true;
}
},
subscription:function(){
store = new MemoryStore({data: [
{label: "Alabama"},
{label: "Alaska"},
{label: "American Samoa"},
{label: "Arizona"},
{label: "Arkansas"},
{label: "Kansas"},
{label: "Kentucky"}
]});
var searchbox=registry.byId("searchbox");
on(searchbox.domNode,"search",lang.hitch(this,this.onSearch));
},
onSearch: function (results, query, options) {
// this.onSearch = function () {};
console.log(results);
}
});
return controllers.SearchController;
}
);
Also, I am following this link dojox/mobile/SearchBox 'onSearch' event runs twice on webkit
to use the workaround for dojox searchbox. How can I implement it in my case?
You should never try to access widget events through DOM nodes. There is a difference between widgets and DOM nodes, and this is one of them. Also, because dojo/on can only be used with DOM nodes and DOM events, you cannot use it to handle the onSearch event.
Every widget has a on() function that you can use to attach widget event handlers. For example:
searchbox.on("search", lang.hitch(this, this.onSearch));
If the event runs twice, you can try doing something like this (you will probably have to rewrite this in your object oriented design):
var myEventHandler = searchbox.on("search", lang.hitch(this, this.onSearch());
myEventHandler.remove();
According to the API documentation the return value of the on() function is undefined, but this topic its stated that it returns an object containing a remove() function able to remove the event listener.
I don't think it's possible. If you want to retrieve data from your database/webservice, you could use the dojo/store/JsonRest store (RESTful webservices) or you could implement your own store (or fetch the data and put it in a dojo/store/Memory).
Dojo chooses for an abstraction layer upon your data implementation called the store API. The advantages of these are that, because it's an abstraction layer, that you can use your store for multiple purposes (all Dijit widgets, Dojo mobile widgets, ...) work in a similar way that they use a store.
Concerning this part of your question:
I am following this link dojox/mobile/SearchBox 'onSearch' event runs twice on webkit to use the workaround for dojox searchbox. How can I implement it in my case?
I do not think such a workaround is needed. As I wrote in this answer, as long as you have a store specified, SearchBox.onSearch() should be called only once.
In short: just do not apply this workaround, it shouldn't be necessary.
In addition to the event mistake pointed out by Dmitri, there's an issue with the order of execution.
When does Dojo parse your HTML? Do you have parseOnLoad:true in your dojoConfig (or data-dojo-config)?
When the parser reaches data-dojo-type="dojox/mobile/SearchBox", it will try to instantiate a SearchBox widget. Because you have specified store:store in its properties, it will look for a variable called store.
Now, the store variable itself gets instantiated in your SearchController. So you have to make sure that subscription() is called before the parser runs. However, the subscription() method in turn tries to look for a widget called "searchbox". So the parser has to be called before subscription(). As you can tell, this isn't going to work :)
So you have to rewrite the SearchController a bit. For example, you can remove the store:store from data-dojo-props, and let the controller set it in the subscription method:
var store = new MemoryStore({data: [....]});
var searchbox = registry.byId("searchbox");
searchbox.set("store", store);
searchbox.on("search", lang.hitch(this, this.onSearch)); // See Dmitri's answer.
I have a DOJO Editor that I add in JS using the method createEditor
require(["dijit/Editor"],
function(Editor){
this.createEditor = function(idToReplace){
var myEditorA = new Editor({
height: '50px',
plugins:['bold','italic']
}, document.getElementById(idToReplace));
myEditorA.startup();
}
});
I need the text inside the Editor after it has been changed.
I hooked up the method getEditorText but it is failing to do as I want it to do.
require(["dijit/Editor"], "dojo/dom",
function(Editor, dom){
this.getEditorText = function(idofEditor){
//Editor myEditor =Editor(null, dom.byId(idofEditor)); does not work either
var myEditor = dom.byId(idofEditor);
var content = myEditor.get("value");
});
The value that I need is stored in the attribute "value" in the Editor.
If I store myEditorA in a global variable I can get the content but I need the correct syntax to avoid working with unnecessary global variables
In Dojo widgets (dijit) and DOM nodes are treated seperately. For DOM nodes you indeed need to use the dojo/dom module and the function byId(). For widgets however, you need the dijit/registry module and then you can get the widget by its DOM node like this:
require(["dijit/registry", "dojo/dom"], function(registry, dom) {
var myEditor = registry.byNode(dom.byId(idofEditor));
});
But because the registry also saves your editor with the same ID as your DOM node, you can also access it directly (without using the DOM node) like this:
require(["dijit/registry"], function(registry) {
var myEditor = registry.byId(idofEditor);
});
I made an example JSFiddle which you can find here.
I am rather new to sencha touch, I've done a lot of research and tutorials to learn the basics but now that I am experimenting I have run into a problem that I can't figure out.
I have a basic DataList which gets its data from a store which displays in a xtemplate.
Within this template I have created a member function which requires store field data to be parsed as a parameter.
I would like to make a thumbnail image (that's source is pulled from the store) execute the member function on click/tap.
I can't find any information on this within the docs, does anyone know the best way to go about this?
Here is a code example (pulled from docs as I can't access my actual code right now).
var tpl = new Ext.XTemplate(
'<p>Name: {name}</p>'
{
tapFunction: function(name){
alert(name);
}
}
);
tpl.overwrite(panel.body, data);
I want to make the paragraph clickable which will then execute the tapFunction() member function and pass the {name} variable.
Doing something like onclick="{[this.tapFunction(values.name)]} " does not seem to work.
I think functions in template are executed as soon as the view is rendered so I don't think this is the proper solution.
What I would do in your case is :
Add a unique class to your < p > tag
tpl : '<p class="my-p-tag">{name}</p>'
Detect the itemtap event on the list
In your dataview controller, you add an tap event listener on your list.
refs: {
myList: 'WHATEVER_REFERENCE_MATCHES_YOUR_LIST'
},
control: {
myList: {
itemtap: 'listItemTap'
}
}
Check if the target of the tap is the < p > tag
To do so, implement your listItemTap function like so :
listItemTap: function(list,index,target,record,e){
var node = e.target;
if (node.className && node.className.indexOf('my-p-tag') > -1) {
console.log(record.get('name'));
}
}
Hope this helps