the question is simple but I didn't found any similar to this.
I'd like to enable fancytree with dnd plugin, but each node should maintain his own parent (if it's root he should remain root).
Thanks,
Riccardo
This is the solution I was looking for:
extensions: ["dnd"],
dnd: {
autoExpandMS: 400,
focusOnClick: true,
preventVoidMoves: true, // Prevent dropping nodes 'before self', etc.
preventRecursiveMoves: true, // Prevent dropping nodes on own descendants
dragStart: function(node, data) {
// if false dnd is disabled
return true;
},
dragStop: function(node, data) {
return true;
},
dragEnter: function(node, data) {
if(node.parent !== data.otherNode.parent) return false;
return true;
},
dragDrop: function(node, data) {
// if dropped to another node insert it before!
data.otherNode.moveTo(node, "before");
}
Related
Preface:
I am aware that there is a duplicate question out there. I am posting it again because it has no answers (and it's from 4 years ago).
General description of what I want:
I want to be able to hide a DOM-element (adding Element.style.display = "none") before the DOM is loaded into the view.
What I've tried:
Other posts point to using a MutationObserver and running it on the document element.
To ensure that we are able to hide an element before the DOM is loaded, we are to run the script containing the MutationObserver as a content_script with "run_at":"document_start".
I did all of this, and I still see a flicker (the elements appear when I load a page and then quickly disappear).
What I'm trying to do:
There's a ul which contains some li with some text on the page I inject my content_script.js into. I populate my popup.html with <text, checkbox> pairs. If the checkbox is checked, the li containing said text is visible, else it is hidden. I want it to persist between refreshes, hence the use of storage.
Things work - but there's a flicker whenever I refresh the page. The elements are there, then they're gone. I don't want them to show up in the first place!
My code:
When I detect that the DOM elements I may remove have loaded, I generate an Object that indicates whether I should hide or keep visible that specific DOM element.
I then set its Element.style.display to none or block accordingly.
/**manifest.json
...
"content_scripts": [
{
"matches": [
"some_website_url"
],
"js": [
"content_script.js"
],
"run_at": "document_start"
}
]
...
*/
///content_script.js
const mutationObserver = new MutationObserver((mutations) => {
for (const { addedNodes } of mutations) {
for (const node of addedNodes) {
if (node.tagName) {
if (node.querySelector(potentially_hidden_element_selector)) {
chrome.storage.sync.get("courses", ({ courses }) => {
chrome.storage.sync.set({ "courses": generateCourseList(courses) }, () => {
const courseElements = Array.from(node.closest('ul').querySelectorAll('a[data-parent-key="mycourses"]'))
courseElements.forEach(courseElement => {
const courseName = getCourseName(courseElement)
const isVisible = courses[courseName]
updateCourseElementInSidebar(courseElement, isVisible)
})
})
})
// We found what we were looking for so stop searching
mutationObserver.disconnect()
}
}
}
}
})
mutationObserver.observe(document, { childList: true, subtree: true })
EDIT 1:
My generateCourseList method depends on the DOM elements I may try to hide - so I can't call the chrome.storage.set method before the DOM has loaded I think.
When I refresh the page, a list of courses eventually populates the DOM.
I then populate the storage's courses object based on these course elements' innerText properties. I set each of these elements' visibility to true or false based on one of two factors: if this course is already defined in the courses object, keep its visibility status, if it isn't, set it to true (visible by default).
I can't make certain DOM elements visible/hidden if I don't have reference to them though. So if I try to call generateCourseList before those specific DOM elements have loaded, I end up trying to retrieve all the course elements (document.querySelectorAll('a[data-parent-key="mycourses"]')) and get returned nothing. I end up setting courses in chrome.storage to nothing because of this chrome.storage.sync.set({ "courses": generateCourseList(courses) }....
EDIT 2:
Here is all of my code. I try to chrome.storage.sync.get as soon as I can, and I try to not depend on the result of chrome.storage.sync.set.
I try to delete the elements as soon as I can, but I'm having difficulty doing so. This is because I have difficulty knowing when the content I want to access (the course elements) have fully loaded. Previously, I was detecting when one course element was visible, and when it was, I assumed all were. This was a mistake. I was able to access the one courselement the moment it popped up, but sometimes only 4 of the 6 course elements were actually loaded. I can't hardcode this number, because it changes from person to person. I can't just tackle them one by one, because then I wouldn't know when to disconnect the MutationObserver. I used the debugger and tried to find what element is loaded soon after all 6 course elements are loaded, and that is the header#page-header.row element. I still get a flicker, though less noticeable than before.
Anything I can do to make it even less noticeable?
function start_mutation_observer() {
chrome.storage.sync.get({ 'savedCourses': {} }, ({ savedCourses }) => {
const observer = new MutationObserver((mutations) => {
for (const { addedNodes } of mutations) {
for (const node of addedNodes) {
// The page header gets updated AFTER the courseList is updated - so once it's in the page, we know the courseElements are too
if (document.querySelector('header#page-header.row')) {
observer.disconnect()
const generatedCourses = generateCourseList(savedCourses)
const courseElements = getCourseElements()
// Set visibility of course elements
courseElements.forEach(courseElement => {
const courseName = getCourseElementTextContent(courseElement);
const isShown = generatedCourses[courseName];
setCourseElementVisibility(courseElement, isShown);
});
chrome.storage.sync.set({ 'savedCourses': generatedCourses });
return
}
}
}
});
observer.observe(document, { childList: true, subtree: true });
// In case the content script has been injected when some of the DOM has already loaded
onMutation([{ addedNodes: [document.documentElement] }]);
});
}
function getCourseElements() {
const COURSE_ELEMENT_SELECTOR = 'ul > li > a[data-parent-key="mycourses"]'
return Array.from(document.querySelectorAll(COURSE_ELEMENT_SELECTOR))
}
function getCourseElementTextContent(courseElement) {
const COURSE_ELEMENT_TEXT_CONTAINER_SELECTOR = 'a[data-parent-key="mycourses"] > div > div > span.media-body'
return courseElement.querySelector(COURSE_ELEMENT_TEXT_CONTAINER_SELECTOR).textContent
}
function generateCourseList(savedCourses) {
// Turns [[a, b], [b,c]] into {a:b, b:c}
return Object.fromEntries(getCourseElements().map(courseElement => {
const courseName = getCourseElementTextContent(courseElement)
const isShown = savedCourses[courseName] ?? true
return [courseName, isShown]
}))
}
function setCourseElementVisibility(courseElement, isShown) {
if (isShown) {
courseElement.style.display = "block"
} else {
courseElement.style.display = "none"
}
}
start_mutation_observer()
EDIT 3:
I think it's as good as can be now. I only refresh the visibility of the course elements that were just loaded into the DOM. There's essentially no flicker now (there is a slight one, but its' the same amount of flickering without my extension).
Here is the code for the MutationObserver
function start_mutation_observer() {
let handledCourseElements = new Set()
chrome.storage.sync.get({ 'savedCourses': {} }, ({ savedCourses }) => {
const observer = new MutationObserver((mutations) => {
for (const { addedNodes } of mutations) {
for (const node of addedNodes) {
const courseElements = getCourseElements()
const courseElementsAdded = courseElements.length > handledCourseElements.size
// If a courseElement was added, update visibility of those that weren't already processed
if (courseElementsAdded) {
const generatedCourses = generateCourseList(savedCourses)
courseElements
.filter(courseElement => !handledCourseElements.has(courseElement))
.forEach(courseElement => {
const courseName = getCourseElementTextContent(courseElement)
const courseShouldBeVisible = generatedCourses[courseName];
setCourseElementVisibility(courseElement, courseShouldBeVisible);
handledCourseElements.add(courseElement)
})
}
// The page header gets updated AFTER the courseList is updated - so once it's in the page, we know the courseElements are too
if (document.querySelector('header#page-header.row')) {
observer.disconnect()
chrome.storage.sync.set({ 'savedCourses': generateCourseList(savedCourses) });
return
}
}
}
});
observer.observe(document, { childList: true, subtree: true });
// In case the content script has been injected when some of the DOM has already loaded
onMutation([{ addedNodes: [document.documentElement] }]);
});
}
Reading storage is slow and asynchronous, so you need to do it at the beginning:
chrome.storage.sync.get('courses', ({ courses }) => {
chrome.storage.sync.set({ 'courses': generateCourseList(courses) });
const observer = new MutationObserver(onMutation);
observer.observe(document, { childList: true, subtree: true });
onMutation([{addedNodes: [document.documentElement]}]);
function onMutation(mutations) {
for (const { addedNodes } of mutations) {
for (const node of addedNodes) {
if (node.tagName && node.querySelector(potentially_hidden_element_selector)) {
observer.disconnect();
processNode(node, courses);
}
}
}
}
});
function processNode(node, courses) {
const courseElements = Array.from(
node.closest('ul').querySelectorAll('a[data-parent-key="mycourses"]'));
courseElements.forEach(courseElement => {
const courseName = getCourseName(courseElement);
const isVisible = courses[courseName];
updateCourseElementInSidebar(courseElement, isVisible);
});
}
I'm using ag-Grid Enterprise Vue.
I see in the docs how to enable a "context menu" that is available by right-clicking any individual cell.
I instead would love to have a special column (pinned to the right) that has a button (maybe looking like ⚙ or ...) that opens a menu upon left-click.
How could I go about enabling this? I have found no examples in the docs.
Ag-grid Cell containing menu button is a similar question but has no answer.
From this comment on this ag-grid-enterprise issue, I was able to fork the example, and I think it will work for my situation.
The relevant code is:
var gridOptions = {
columnDefs: columnDefs,
enableRangeSelection: true,
getContextMenuItems: getContextMenuItems,
allowContextMenuWithControlKey: true,
onCellClicked: params => {
console.log(params);
if(params.column.colDef.field === '...'){
params.api.contextMenuFactory.showMenu(params.node, params.column, params.value, params.event)
}
},
onCellContextMenu: params => {
params.api.contextMenuFactory.hideActiveMenu()
}
};
function getContextMenuItems(params) {
console.log('getContextMenuItems', params);
const node = params.node;
console.log('node.id, node.rowIndex, node.data', node.id, node.rowIndex, node.data);
var result = [
{
name: `Alert 'Row ${node.rowIndex + 1}'`,
action: function() {
window.alert(`Row ${node.rowIndex + 1}`);
},
cssClasses: ['redFont', 'bold']
},
'separator',
{
name: 'Checked',
checked: true,
action: function() {
console.log('Checked Selected');
},
icon: '<img src="../images/skills/mac.png"/>'
},
'copy' // built in copy item
];
return result;
}
I am unable to find any way to disable checkbox node using angular tree component.
There is no option to mark the tree disabled so that the checkboxes that appear alongwith th etree data should be disabled. Please suggest
Disabling the node can be done by actionMapping inside options attribute https://angular2-tree.readme.io/v1.2.0/docs/options. Here click event of mouse can be overwritten.
<Tree [nodes]="nodes" [options]="treeOptions"></Tree>
In my tree data I kept an attribute isSelectable on each node, which is true|false. In case of true i proceed selecting the node otherwise it does not do anything. Here are full options that I am passing to the tree component.
public options: ITreeOptions = {
isExpandedField: 'expanded',
idField: 'uuid',
getChildren: this.getChildren.bind(this),
actionMapping: {
mouse: {
click: (tree, node, $event) => {
if ( node.data.isSelectable ) {
this.isNodeSelected.emit(node.data);
this.alreadySelected = true;
this.preSelected.tree = tree;
this.preSelected.node = node;
this.preSelected.event = $event;
TREE_ACTIONS.ACTIVATE(this.preSelected.tree, this.preSelected.node, this.preSelected.event);
}
}
}
},
nodeHeight: 23,
allowDrag: (node) => {
return false;
},
allowDrop: (node) => {
return false;
}
};
I have a map wher we can classically switch from one style to another, streets to satellite for example.
I want to be informed that the style is loaded to then add a layer.
According to the doc, I tried to wait that the style being loaded to add a layer based on a GEOJson dataset.
That works perfectly when the page is loaded which fires map.on('load') but I get an error when I just change the style, so when adding layer from map.on('styledataloading'), and I even get memory problems in Firefox.
My code is:
mapboxgl.accessToken = 'pk.token';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v10',
center: [5,45.5],
zoom: 7
});
map.on('load', function () {
loadRegionMask();
});
map.on('styledataloading', function (styledata) {
if (map.isStyleLoaded()) {
loadRegionMask();
}
});
$('#typeMap').on('click', function switchLayer(layer) {
var layerId = layer.target.control.id;
switch (layerId) {
case 'streets':
map.setStyle('mapbox://styles/mapbox/' + layerId + '-v10');
break;
case 'satellite':
map.setStyle('mapbox://styles/mapbox/satellite-streets-v9');
break;
}
});
function loadJSON(callback) {
var xobj = new XMLHttpRequest();
xobj.overrideMimeType("application/json");
xobj.open('GET', 'regions.json', true);
xobj.onreadystatechange = function () {
if (xobj.readyState == 4 && xobj.status == "200") {
callback(xobj.responseText);
}
};
xobj.send(null);
}
function loadRegionMask() {
loadJSON(function(response) {
var geoPoints_JSON = JSON.parse(response);
map.addSource("region-boundaries", {
'type': 'geojson',
'data': geoPoints_JSON,
});
map.addLayer({
'id': 'region-fill',
'type': 'fill',
'source': "region-boundaries",
'layout': {},
'paint': {
'fill-color': '#C4633F',
'fill-opacity': 0.5
},
"filter": ["==", "$type", "Polygon"]
});
});
}
And the error is:
Uncaught Error: Style is not done loading
at t._checkLoaded (mapbox-gl.js:308)
at t.addSource (mapbox-gl.js:308)
at e.addSource (mapbox-gl.js:390)
at map.js:92 (map.addSource("region-boundaries",...)
at XMLHttpRequest.xobj.onreadystatechange (map.js:63)
Why do I get this error whereas I call loadRegionMask() after testing that the style is loaded?
1. Listen styledata event to solve your problem
You may need to listen styledata event in your project, since this is the only standard event mentioned in mapbox-gl-js documents, see https://docs.mapbox.com/mapbox-gl-js/api/#map.event:styledata.
You can use it in this way:
map.on('styledata', function() {
addLayer();
});
2. Reasons why you shouldn't use other methods mentioned above
setTimeout may work but is not a recommend way to solve the problem, and you would got unexpected result if your render work is heavy;
style.load is a private event in mapbox, as discussed in issue https://github.com/mapbox/mapbox-gl-js/issues/7579, so we shouldn't listen to it apparently;
.isStyleLoaded() works but can't be called all the time until style is full loaded, you need a listener rather than a judgement method;
Ok, this mapbox issue sucks, but I have a solution
myMap.on('styledata', () => {
const waiting = () => {
if (!myMap.isStyleLoaded()) {
setTimeout(waiting, 200);
} else {
loadMyLayers();
}
};
waiting();
});
I mix both solutions.
I was facing a similar issue and ended up with this solution:
I created a small function that would check if the style was done loading:
// Check if the Mapbox-GL style is loaded.
function checkIfMapboxStyleIsLoaded() {
if (map.isStyleLoaded()) {
return true; // When it is safe to manipulate layers
} else {
return false; // When it is not safe to manipulate layers
}
}
Then whenever I swap or otherwise modify layers in the app I use the function like this:
function swapLayer() {
var check = checkIfMapboxStyleIsLoaded();
if (!check) {
// It's not safe to manipulate layers yet, so wait 200ms and then check again
setTimeout(function() {
swapLayer();
}, 200);
return;
}
// Whew, now it's safe to manipulate layers!
the rest of the swapLayer logic goes here...
}
Use the style.load event. It will trigger once each time a new style loads.
map.on('style.load', function() {
addLayer();
});
My working example:
when I change style
map.setStyle()
I get error Uncaught Error: Style is not done loading
This solved my problem
Do not use map.on("load", loadTiles);
instead use
map.on('styledata', function() {
addLayer();
});
when you change style, map.setStyle(), you must wait for setStyle() finished, then to add other layers.
so far map.setStyle('xxx', callback) Does not allowed. To wait until callback, work around is use map.on("styledata"
map.on("load" not work, if you change map.setStyle(). you will get error: Uncaught Error: Style is not done loading
The current style event structure is broken (at least as of Mapbox GL v1.3.0). If you check map.isStyleLoaded() in the styledata event handler, it always resolves to false:
map.on('styledata', function (e) {
if (map.isStyleLoaded()){
// This never happens...
}
}
My solution is to create a new event called "style_finally_loaded" that gets fired only once, and only when the style has actually loaded:
var checking_style_status = false;
map.on('styledata', function (e) {
if (checking_style_status){
// If already checking style status, bail out
// (important because styledata event may fire multiple times)
return;
} else {
checking_style_status = true;
check_style_status();
}
});
function check_style_status() {
if (map.isStyleLoaded()) {
checking_style_status = false;
map._container.trigger('map_style_finally_loaded');
} else {
// If not yet loaded, repeat check after delay:
setTimeout(function() {check_style_status();}, 200);
return;
}
}
I had the same problem, when adding real estate markers to the map. For the first time addding the markers I wait till the map turns idle. After it was added once I save this in realEstateWasInitialLoaded and just add it afterwards without any waiting. But make sure to reset realEstateWasInitialLoaded to false when changing the base map or something similar.
checkIfRealEstateLayerCanBeAddedAndAdd() {
/* The map must exist and real estates must be ready */
if (this.map && this.realEstates) {
this.map.once('idle', () => {
if (!this.realEstateWasInitialLoaded) {
this.addRealEstatesLayer();
this.realEstateWasInitialLoaded = true
}
})
if(this.realEstateWasInitialLoaded) {
this.addRealEstatesLayer();
}
}
},
I ended up with :
map.once("idle", ()=>{ ... some function here});
In case you have a bunch of stuff you want to do , i would do something like this =>
add them to an array which looks like [{func: function, param: params}], then you have another function which does this:
executeActions(actions) {
actions.forEach((action) => {
action.func(action.params);
});
And at the end you have
this.map.once("idle", () => {
this.executeActions(actionsArray);
});
I have created simple solution. Give 1 second for mapbox to load the style after you set the style and you can draw the layer
map.setStyle(styleUrl);
setTimeout(function(){
reDrawMapSourceAndLayer(); /// your function layer
}, 1000);
when you use map.on('styledataloading') it will trigger couple of time when you changes the style
map.on('styledataloading', () => {
const waiting = () => {
if (!myMap.isStyleLoaded()) {
setTimeout(waiting, 200);
} else {
loadMyLayers();
}
};
waiting();
});
I am using form editing but I only want the ADD form to appear if the results from dataURL are correct. I can hide it, but I really don't want it at all on condition. Plus, the hide() only works after the alert is cleared
$("#schedule").jqGrid('editGridRow', "new", {
url: './ar_schedule_update.cgi?',
editData: {visitor:visitor},
beforeInitData: function() {
$('#schedule').setColProp('archiveid',{editable: true,hidden:false, edittype: 'select',
editoptions: {dataUrl: './ar_archiveid_edit_options.cgi?system=' + selected_system,
buildSelect: function(data) {
if (data.match(/^ERROR/)) {
$('#editmodschedule').hide(); //Makes it disappear ok after alert cleared
alert(data);
return false;
}
return data;
}
}
});
},
beforeShowForm: function(formid) {
//NEED TO EVALUATE CONDITION HERE? AND BAIL IF ERROR
},
onClose: function() {...............
Thanks in advance,
Mike