PostCSS will allow us to use their autoprefixer module which would automatically add prefixed to flex box. It would address #97.

Objections, thoughts?

When scrolling quite fast I've noticed the following behaviour:

1. Scrolling starts and triggers the scroll handler which doesn't pass
2. Scrolling finishes before the throttle timeout
3. No more triggers are fired, no page is loaded unless you scroll back up

I've implemented a quick fix in our app by adding a debounce as well so that we always get a scroll trigger once scrolling stops but there may be a more efficient solution.

import Ember from 'ember';
import LightTable from 'ember-light-table/components/light-table';

const {$, run} = Ember;

export default LightTable.extend({
    _setupScrollEvents() {
        $(this.get('touchMoveContainer')).on('touchmove.light-table', run.bind(this, this._scrollHandler, '_touchmoveTimer'));
        $(this.get('scrollContainer')).on('scroll.light-table', run.bind(this, this._scrollHandler, '_scrollTimer'));
        $(this.get('scrollContainer')).on('scroll.light-table', run.bind(this, this._scrollHandler, '_scrollDebounce'));
    },

    _scrollHandler(timer) {
        this.set(timer, run.debounce(this, this._onScroll, 100));
        this.set(timer, run.throttle(this, this._onScroll, 100));
    }
});

One of the requirements I was given was to implement the first column as a fixed column. Much like http://opensource.addepar.com/ember-table/#/overview. If you collapse the width of the page, you will see that you can scroll everything but the first column to the right. This gives a much better presentation on mobile/tablet. Can you guys think of a way that I might accomplish this?

The Column class has the sortable option to configure if it can be sorted or not. It would be nice to also have an option to configure if the column can be hidden or not.

Having this option in the Column class will be useful to create a generic component for the user to choose the columns visible in the table, something like a list with a checkbox for each column in the table that can be hidden.

Hi again,

I've noticed a performance problem and I haven't figured out what is causing it yet. I tried attaching the profile but github doesn't allow .cpuprofiles. You can easily reproduce it by profiling the demo table at http://offirgolan.github.io/ember-light-table/#/. The rendering speed isn't that noticeable since you're only rendering ~20 rows off the bat but even at ~150 rows, rendering speed is at ~2.5 seconds. I've reduced my table down to one row and have noticed in the profile that the one row creates about 3 large spikes that have a huge number of function calls. You can see spike after spike, for each row, if you profile the demo page.

I'm continuing to investigate. We really like ember-light-table but this performance issue is a show-stopper at the moment. Cheers,

Zach

I've noticed that you have to manually call table.addRow() if you'd like a new row to appear in the table. Is it possible to have the table watch the initial passed in model to the constructor for changes? Or is adding rows at runtime not really a priority feature for this table addon?

First off, I love Ember Light Table! Much easier than manually creating tables.

I'd like my table to behave like it has the CSS attribute "table-layout: auto". In other words, column widths change to accommodate the width of their contents. But since Ember Light Table renders the table head as a separate table, "table-layout: auto" doesn't consider the width of the body data below.

For example, look at the "League" column (4th from the left). It's wider than the column since Ember Light Table makes all the columns the same width:

When I give the head and body tables the "table-layout: auto" attribute, the columns become misaligned:

I want to create a table that has a checkbox in the first column for selecting/deselecting each row. This works fine since the lt-row component passes row object to the cell component.

However, I also need to have a checkbox in the header that selects/deselects all rows in the table. But for this I need to have access to the table object and all rows in it. The biggest problem is that the header checkbox should be updated as the rows are being selected by the user, e.g., if the user selects all rows in the table one by one, the header checkbox should also be checked.

There doesn't seem to be a way to know what rows are selected in the table from the header component. As a workaround, I am passing the table object inside the tableActions parameter, but I hope there is a better way for doing this.

This is my checkbox-header component:

// components/checkbox-header.js
export default Ember.Component.extend({
    tagName: 'i',
    classNameBindings: ['icon'],

    iconChecked: 'fa fa-check-square-o',
    iconUnchecked: 'fa fa-square-o',

    table: Ember.computed.alias('tableActions.table'),
    notSelectedRows: Ember.computed.filterBy('table.rows', 'selected', false),
    allSelected: Ember.computed.empty('notSelectedRows'),

    icon: Ember.computed('allSelected', function() {
        return this.get('allSelected') ? this.get('iconChecked') : this.get('iconUnchecked');
    }),

    click() {
        this.get('table.rows').setEach('selected', !this.get('allSelected'));
    }
});

I've been reading through the docs and couldn't see any mention of how you might implement mutliselect?

I assume it's by adding selected rows to an array, but I'm not sure how to pass that back as a comparison for the table to keep track of which rows are selected..

I know it's designed for maximum flexibility for people to implement this sort of thing however best suits their app, but would it be possible to get a snippet as an example of how someone else has done it?

Thank you for sharing your addon.
In my implementation, which is basically a copy of the example at http://offirgolan.github.io/ember-light-table/, "onScrolledToBottom" is called just once when the component first loads, but it doesn't get called again on scroll (although "canLoadMore" is true after the first fetch of records).
Are there any more configurations needed for the infinite scroll to work?
I didn't see any in the example or docs.
Thank you very much!

max-height allows the table to get reduced if the rows don't fill the specified height. I don't know if someone would be interested on having their tables filling always the same height independently of the number of rows. Maybe would be interesting to have both options?

I just pulled down beta5 to see whats new, and I'm getting this error:

Cannot read property 'length' of undefined
TypeError: Cannot read property 'length' of undefined
    at CoreObject.module.exports.filterHelpers (/my-project/node_modules/ember-light-table/node_modules/ember-composable-helpers/index.js:40:18)

Doing a quick search through the repo, I'm not sure what this sub-module is being used for in ember-light-table? There doesn't appear to be any addon configuration including the whitelist it appears to be looking for https://github.com/DockYard/ember-composable-helpers#configuration ?

Hi, i'm trying to style the table element with bootstrap like this. I added the classNames attribute in the component template but it adds the classes to the div, not the table tag.
{{#light-table table classNames='table table-bordered table-hover table-condensed' as |t|}}
Is this supported? am i doing something wrong?

ember-light-table: 1.0.0
ember-cli: 2.6.2
node: 6.2.2
os: linux x64

Javascript error thrown when loading component.

Based on ember-light-table's example http://offirgolan.github.io/ember-light-table/

• Ember 2.6.2

ember install ember-truth-helpers fixes the issue.

When I load the table in a small window,

then resize the window,

cell values are missing.

Any thoughts on providing a hook for users to prevent calling the onScrolledToBottom method if they have already retrieved all their records from the db, or should this behavior be left up to the user?

Sorry to say that the documentation is not giving any idea how to use this in real project.

after installing the addon, i generate a custom component 'inventory-table'

put the template in some index.hbs

// inventory/index.hbs
 {{#light-table table onScrolledToBottom=(action 'onScrolledToBottom') as |t|}}
     {{t.head
       onColumnClick=(action 'onColumnClick')
       iconAscending='fa fa-sort-asc'
       iconDescending='fa fa-sort-desc'
       fixed=true
     }}

     {{#t.body canSelect=false height='64vh' as |body|}}
       {{#if isLoading}}
         {{#body.loader}}
           {{table-loader}}
         {{/body.loader}}
       {{/if}}
     {{/t.body}}
   {{/light-table}}

pasted this content in the newly created component

//app/components/inventory-table.js
import Ember from 'ember';
import Table from 'ember-light-table';

const { isEmpty } = Ember;

export default Ember.Component.extend({
  page: 1,
  limit: 20,
  dir: 'asc',
  sort: null,
  table: null,
  isLoading: false,
  canLoadMore: true,

  columns: [{
    label: 'Avatar',
    valuePath: 'avatar',
    width: '60px',
    sortable: false,
    cellComponent: 'user-avatar'
  }, {
    label: 'First Name',
    valuePath: 'firstName',
    width: '150px'
  }, {
    label: 'Last Name',
    valuePath: 'lastName',
    width: '150px'
  }, {
    label: 'Address',
    valuePath: 'address'
  }, {
    label: 'State',
    valuePath: 'state'
  }, {
    label: 'Country',
    valuePath: 'country'
  }],

  init() {
    this._super(...arguments);
    this.set('table', new Table(this.columns));
  },

  fetchRecords() {
    this.set('isLoading', true);
    this.get('store').query('user', this.getProperties(['page', 'limit', 'sort', 'dir'])).then(records => {
      this.table.addRows(records);
      this.set('isLoading', false);
      this.set('canLoadMore', !isEmpty(records));
    });
  },

  actions: {
    onScrolledToBottom() {
      if(this.get('canLoadMore')) {
        this.incrementProperty('page');
        this.fetchRecords();
      }
    },

    onColumnClick(column) {
      if (column.sorted) {
        this.setProperties({
          dir: column.ascending ? 'asc' : 'desc',
          sort: column.get('valuePath'),
          page: 1
        });
        this.table.setRows([]);
        this.fetchRecords();
      }
    }
  }
});

initially it thrown

ember.debug.js:16628Uncaught Error: An action named 'onScrolledToBottom' was not found in <zahid-staging@controller:dashboard/inventory/index::ember930>.

The i removed this function from component helper

but dont know where to put the instantiation code

import Table from 'ember-light-table';
const table = new Table(columns, rows);

Tried in index controller , inventory-table.js(component file) , but it throws

ember.debug.js:16628Uncaught Error: Assertion Failed: [ember-light-table] table must be an instance of Table

May i get a clear picture of where to put these codes and how? I love this addon, but couldn't figure out how to use. please help

Hey guys i love light table, it has everything out of the box with a simple config, but is it possible to have resizable columns in any way?

Did setRows or addRows go away or something? I'm not getting any errors that they are undefined, but none of my rows load anymore.

I've encountered several issues trying to use the cellComponent property on my column definition. The docs don't make it clear that the component path must be light-table/cells/my-component.

If I provide a valuePath in the columns spec I get an error Cannot set read-only property "value" on object. The workaround is to define value: null on the Cell subclass, but the valuePath has no effect.

Also, the only way for me to get the value was from row.content.

Finally, my test file causes an error form ESLint TypeError: Cannot assign to read only property 'stack' of object '[object Object]'.

I'm using Ember 2.6.2 and Ember Data 2.6.1.

I would like to add an information box when I hover over a header column. Is this possible? If not - where do I have to customize to make this happen?

Hi, just wondering is there any simple way to add css class to table row. CSS class should be computed from row data

For some reason, when I set height to auto, the .tse-scroll-content div still has a manually set 300px height, so the table does not size itself to full height.

I came across a use-case where I needed to add a row to the beginning of the array. I've solved it by doing:

let row = Table.createRow(attribute);
this.get('table.rows').insertAt(0, row);

It may be a good idea to make a proper public API to do this. I was thinking about this.get('table').addRowAt(0, someObject). Or maybe change the argument signature of the addRow method by adding idx at the end, so you could do addRow(object, 0).

As a side note, it might also be a good idea to return the created Row after calling addRow. This way you can manipulate selected and expanded directly after you've added it.

Thoughts?

It can be useful to add css selectors to help to find a row or a cell. The row can have this #model-1.model and a row can be found with .attr. So, to find a cell, I can do something like $('#user-1 .name') to find the cell. It would be easier for styling and acceptance testing.

If we use EmberData, I think row.content.constuctor.name and row.content.id is enough to find the row id but I'm not sure for non-EmberData resources.

What you think?

Great project by the way! So much more I can get out of a grid with this add on.

So I am trying to figure out how each row could be wrapped with a link-to (if there already isn't one!). Not exactly sure, but does the row variable contain the model instance? If so, would exposing the row variable in hash be one solution to this?

https://github.com/offirgolan/ember-light-table/blob/master/addon/templates/components/lt-body.hbs#L7

In the docs you have an isLoading option in the template examples, does that come from this addon or is that something we implement ourself?

If it's from the addon, where does it come from?

Any plans to implement sticky headers, so when you scroll you still see the column/group headings?

I'm using the code as described in the docs and:

• I can't get data rows to show up (i.e. the body)
• Both the {{t.head}} and {{t.foot}} repeat the same header row

extra info:

• calling light-table inside {{posts-table model=model.user.posts}}
• using ember v2.5.1 & ember-data v2.6.0

Add some arbitrary CSS for text alignment

...how does one do this? I've tried passing the action through the component, like so:

  {{#light-table table
    pickupTimeUpdated="pickupTimeUpdated"
    onScrolledToBottom=(action 'onScrolledToBottom')
    class="ui very basic table"
    scrollContainer='.table-scroll-container'
    as |t|
  }}

Nothing. I flailed and tried defining my action like onScrolledToBottom, too.

How'd I go about this?

Is there a way to show multiple model fields in one column? I don't want to use grouped columns but would rather show multiple model fields stacked in one column for each table row.

The docs don't make it clear that the component path must be light-table/cells/my-component.

If I provide a valuePath in the columns spec I get an error Cannot set read-only property "value" on object. The workaround is to define value: null on the Cell subclass, but the valuePath has no effect.

Also, the only way for me to get the value was from row.content.

I'd like to have a first column that just adds an index to each row signifying the order models were taken from the database

equivalent to index in the following code snippet:

{{#each users as |user index|}}
  <tr>
    <td>{{index}}</td>
    <td>{{user.name}}</td>
    ...
  </tr>
{{/each}}

I couldn't pick up from the docs wether this was currently possible or not

• Annotate each available component property with a helpful description and maybe an example where possible
• Cell Type and Column Type --> What they are and how they can be used (including their appropriate blueprint generators) #91
• Add overall examples in module homes
• Maybe rename the modules to make everything easier to read? I feel like the docs right now are really hard to follow IMHO

Just wondering if there's any interest in draggable column headings for column re-ordering. This is the one feature missing that is stopping us dropping this in.

Has it been looked at previously? Would you consider a PR for it?

When the columns of the table are all set up with a fixed width and the sum of them is bigger than the screen width size, the table becomes scrollable on the x axis but the hidden content (the content of the columns that are out of the visible part of the table) is not rendered when scrolling on it.

Is it possible to pass multiple valuePaths or the entire object? I currently need two values to pass to my component for computing things.

Is there a concept to bind a different row component? I want to create different tables with different row components (one row component per table).

The Text within the row should be highlighted by classbinding.

Is there a different solution to realize this?

Currently, when invoking row-related methods like Table.addRow(), the options hash doesn't make it to the Row constructor:

this.set('table', new Table(columns = [], rows = []));

this.get('table').addRow({
  key: 'value'
}, {
  classNames: 'some-class-name'
});

// class name is not set on the row

To get the options to be set on a row, you currently have to initialize a Row first.

let row = new Row({
  key: 'value'
}, {
  classNames: 'some-class-name'
});

this.get('table').addRow(row);

Would it not be great if you could pass along the options along with the data when using methods like addRow or pushRow?

I want to use a component to have actions buttons. For the moment, I can pass the id to retrieve the model but it can be useful to have something like this :

  columns: [
    {
      label: 'Actions',
      valuePath: 'self',
      sortable: false,
      cellComponent: 'kh-actions'
    }
  ]

What you think?

When using onScrolledToBottom for infinite scrolling, the ember-in-viewport add-on is used which defines an isInViewport function containing the line:

const tolerances = merge(defaultTolerance, tolerance);

This is causing the following deprecation warning to flood the console:

DEPRECATION: Usage of Ember.merge is deprecated, use Ember.assign instead. [deprecation id: ember-metal.merge] See http://emberjs.com/deprecations/v2.x/#toc_ember-merge for more details.

Either another method of determining whether or not the component is in the viewport needs to be implemented or the add-on itself should be updated to use Ember.assign. I believe the usage of Ember.merge was deprecated in Ember 2.5 but I am not positive.

This is similar to #2.
I have a few tables in an ember application that use a component for a row. Can light-table or one of the contextual components yield an individual or something like that? My use case is to customize the HTML of each row.

{{#t.body as |body row|}}
{{my-row-component row=row}}
{{/t.body}} 

I would need to this to happen before the user clicks on a row, so body.expanded-row wouldn't apply. There doesn't seem to be a way to customize the HTML of the individual rows. I'm open to other ideas too.

Is there a way to drag and expand the size of a column? For example if the text of the column is too large to be seen?

Cheers~

live demo http://offirgolan.github.io/ember-light-table/#/ shows empty table in Safari 8.0.8 from Mac OS X Yosemite 10.10.5

Hey all,

I was curious why the init functionality, like creating a new Table and such isn't handled within the light-table component? As a result, I'm creating a wrapper table that all it does is exactly that and it adds one more, seemingly unnecessary, level of indentation in the hbs file likeso:

{{#netuitive-table-new
       model=model
       as |table|
}}
            {{#light-table table as |t|}}
              {{t.head}}

              {{#t.body as |body|}}
                {{#body.expanded-row as |row|}}
                  Hello <b>{{row.name}}!!</b>
                {{/body.expanded-row}}

                {{#if isLoading}}
                  {{#body.loader}}
                    Loading...
                  {{/body.loader}}
                {{/if}}

                {{#if table.isEmpty}}
                  {{#body.no-data}}
                    No users found.
                  {{/body.no-data}}
                {{/if}}
              {{/t.body}}

              {{t.foot}}
            {{/light-table}}
{{/netuitive-table-new}}

//netuitibe-table-new/component.js
import Ember from 'ember';
import Table from 'ember-light-table';

const computed = Ember.computed;

export default Ember.Component.extend({
  model: null,
  table: null,

  columns: [],

  init() {
    this._super(...arguments);
    this.set('table', new Table(this.get('columns'), this.get('model')));
  }
});

{{!-- /netuitive-table-new/template.hbs --}}
{{yield table}}

Is sorting implemented by default? Seems like {{t.head}} has sort enabled by default, but nothing seems to happen. Here's my setup:

{{#light-table table class='table table-striped table-hover' as |t|}}
  {{t.head multiColumnSort=true}}
  {{t.body onRowClick=(action 'onclick')}}
{{/light-table}}

Looking at the demo app, it looks like you implement sorting yourself by sending the params to the server..

Example:

Region           First Name      Last Name    Sales
---------------------------------------------------
- All            Offir           Golan          100
+ All            Gaurav          Munjal         125
-  N America     Gaurav          Munjal          25
-  Europe        Gaurav          Munjal         100