Does anyone know how/where to register for a grid column's hide event? I want to know when a grid's columns have been hidden or unhidden.
I see nothing in Columns.js
I do see something in Ext.grid.ColumnModel but how do I register for the hiddenchange event in my controller?
My grid is just a simple grid with columns defined in the columns array.
columns: [
{//ID
xtype:'templatecolumn',
tpl:'some template',
header: 'ID',
hideable:true,
width:30,
hidden:false,
...
//other stuff
},
...
{
//other columns
}
What I want to do is in my controller register to be notified when a user has hidden a column.
In the controller register for your grids columns events
control = {
'#gridId gridcolumn':{
beforehide:function( ths, eOpts ){
//do whatever
},
beforeshow:function( ths, eOpts ){
//do whatever
}
}
http://docs.sencha.com/ext-js/4-1/#!/api/Ext.grid.column.Column-event-beforehide
http://docs.sencha.com/ext-js/4-1/#!/api/Ext.grid.column.Column-event-beforeshow
Not sure how I missed this...guess I was staying up to late.
Related
I use vue-chartjs to draw some chart like line, bar, etc.
In my project, there are many cases using specific value or lable of data in chart.
Using tooltip option of vue-chartjs, I can check that value or label of data item when hovered.
I want to know how to access or get information of specific data matched with point on graph when clicked(not hovered).
Here is my code about chart options.
chartOptions: {
responsive: false,
onClick: function(evt){
//Some logic to get value of label of specific data...(type, label, value, ...)
}
In my case, I use 'onclick' option to access specific data on point triggered 'click' event. In 'onClick' callback, I checked all of chart elements and dataset, etc.
How can I get value of label specific dataItem on point of graph(like line) or bar of graph(like bar) when triggered click event?
I was not able to find a solution that worked for me, but I dug a little bit and this is what I came up with.
onClick: function(evt, array) {
if (array.length != 0) {
var position = array[0]._index;
var activeElement = this.tooltip._data.datasets[0].data[position]
console.log(activeElement);
} else {
console.log("You selected the background!");
}
}
This will get the position in the array that you clicked and grab the data from what position you clicked. This may not be the prettiest or best example, but it worked for me.
This solution use the getElementAtEvent method of chartjs, but to use that you need reference to the Chart itself, not the Vue component. We can get that from the $data._chart property. To use this in a parent Vue component, we use the $refs as seen below`.
So parent defines the chart options
{
...
options: {
onClick: this.handleChartClick
}
...
}
and then parent method, using $refs with $data._chart to get the chart. We get the datasetIndex and value and also the tooltip
handleChartClick(evt, elements) {
var chart = this.$refs.periodChart.$data._chart;
const chartIndex = chart.getElementAtEvent(evt);
if (chartIndex.length !== 0) {
const datasetIndex = chartIndex[0]._datasetIndex;
const position = chartIndex[0]._index;
const info = {
datasetIndex: datasetIndex,
valueIndex: position,
label: chart.tooltip._data.labels[position],
value: chart.tooltip._data.datasets[datasetIndex].data[position]
};
console.log(info);
} else {
console.log("Background clicked");
}
I have a scenario where i have 5 buttons which call the same method when clicked. These buttons are clicked in various conditions, but now i want to know how we determine that which particular button has been clicked, from the called method.
For example, i have been calling chocolate() method when i click the buttons, eclairs, dailrymilk, cadbury, snickers and kitkat. Now i will click anyof these buttons from the UI and i want to know which one is clicked. this event has to be handled in the chocolate() method only.
Please suggest me how can i implement this. I am using Adobe Flex 3
If you are not using the addEventListeners but are setting the click property in your buttons you could do something like that:
<s:Button id="snickers"
click="{chocolate('snickers')}"
label="snickers"/>
<s:Button id="kitkat"
click="{chocolate('kitkat')}"
label="kitkat"/>
private function chocolate(type:String):void
{
trace("button", type, "was clicked");
if(type == "snickers")
{
// do stuff
}
else if(type == "kitkat")
{
// do something else
}
}
if you are working with event listeners you could determine the buttons from their ids, for example:
<s:Button id="snickers"
label="snickers"/>
<s:Button id="kitkat"
label="kitkat"/>
// add your event listeners somewhere like in onCreationComplete
snickers.addEventListener(MouseEvent.CLICK, chocolate);
kitkat.addEventListener(MouseEvent.CLICK, chocolate);
private function chocolate(e:MouseEvent):void
{
// e.target is the component that has dispatched the event (a button in this case)
var type:String = e.target.id;
trace("button", type, "was clicked");
if(type == "snickers")
{
// do stuff
}
else if(type == "kitkat")
{
// do something else
}
}
I'd like to be able to hide and show certain buttons in a navigation view bar when a view is push and popped onto the view stack. Shame I can't control that from the view config itself (but I'll save that moan for another time).
I wanted to know which events I should be using when a view is push/popped on a navigation view. The docs sometimes lie and I've been told many times not too trust it, so I'm not! Come on Sencha, Microsoft wouldn't get away with this!
So Any ideas? When I try to print out all the events for a view I get very unreliable behaviour:
What I've found:
When I push a view I get:
initialize
hide
show
When I pop a view I get:
hide
show
What the flip is going on?!?
The code to show events happening:
control: {
myViewRef: {
initialize: function() { console.log("initialize") },
activated: function() { console.log("activated") },
deactivated: function() { console.log("deactivated") },
painted: function() { console.log("painted") },
show: function() { console.log("show") },
hide: function() { console.log("hide") }
},
}
The code to actually push/pop a view:
onInBoxListViewItemTap: function(scope, index, item, record) {
console.log("onInBoxListViewItemTap");
var detailsView = this.getEnquiryDetailsViewRef();
// push view
var navview = this.getMyInboxViewRef();
navview.push(detailsView);
}
Does this stuff actually work properly i.e. Are there concrete events which are guaranteed to fire when a view is pushed and popped?
First of all - you have a typo in your code. You need to reference activate and deactivate not activate_d and deactivate_d.
Second, I would try to subscribe to push and pop events of navigation view and see if it would get you what you want.
I have the same problem.I use painted handler to solve it.
You can't handle 'painted' event in controller
the painted event description
I have an ExtJS 4 grid with GroupingSummary Feature. ExtJs Default is grid is expanded when user clicks on any cell in grouping row. I want to disable this feature, no expansion should take place except when user clicks on designated 'expand' icon. How do I accomplish this?
There is the 'groupclick' event, is there a way to override its default behaviour and do nothing / remove it?
Thanks in advance
The method for it appears to be inherited from Grouping rather than GroupingSummary, so I suspect you need to override this method to prevent the current behaviour:
onGroupClick: function(view, group, idx, foo, e) {
var me = this,
toggleCls = me.toggleCls,
groupBd = Ext.fly(group.nextSibling, '_grouping');
if (groupBd.hasCls(me.collapsedCls)) {
me.expand(groupBd);
} else {
me.collapse(groupBd);
}
So you will need another file with something similar to the following:
Ext.require('Ext.grid.Grouping');
Ext.define('your.class.here', {
override: 'Ext.grid.Grouping',
onGroupClick: function() {
//do nothing
});
)};
Then you should be able to write a function that mimicks it was doing on groupclick, but instead on your icon click. Hope that helps.
How do you make a fireEvent itemclick after the store loads.
I have this but it doesn't work:
pcfstore.on('load', function(){
//auto select first row;
Ext.getCmp('pcf_grid').getSelectionModel().select(0); // this works
//fire itemclick event
var grid= Ext.getCmp('pcf_grid');
grid.fireEvent('itemclick', grid, 0); //this doesnt work
});
Here is my itemclick event in grid view:
viewConfig: {
listeners: {
itemclick: function(dv, record, item, index, e) {
alert(record.data.code);
}
}
}
Basically when the grid loads, it should fire the alert window of the selected first row
of the grid.
itemclick is event of View but not of Grid. Try to use:
grid.getview().fireEvent('itemclick', grid, 0);
And by the way why not use selectionchange instead.
UPDATE
If you have both itemcontextmenu and selectionchange handlers it can be a little bit confusing. In this case I recommend back to square one and use itemclick event.
But your code need to have some modifications:
Assign itemclick event to grid, NOT to it's view.
When firing itemclick pass actual record, NOT an index
like this:
grid.getSelectionModel().select(0);
grid.fireEvent('itemclick', grid, grid.getSelectionModel().getLastSelected());
And here is fiddle to demonstrate what I'm talking about.
After hours of search, I found a solution. It looks like there is an issue with ExtJs4 that make the following functions impossible to work for me:
grid.getSelectionModel().select(0);
or
grid.getView().select(0); // note that this function is deprecated in ExtJS4!!
In my controller, I use this code instead:
store.load({
callback: function (records, operation, success) {
var rowIndex = this.find('id', myRecord); //where 'id': the id field of your model. You can replace 'id' with your unique field.. And 'this' is your store.
grid.getView().select(rowIndex);
}
})
Where myRecord is the record to highlight and select.
It then worked like a charm. I got the row 0 highlighted and selected. However, the itemclick listeners were not fired when the row is select with this code.