feat(table): support sticky headers, footers, and columns #11483

andrewseguin · 2018-05-23T21:42:58Z

jelbourn · 2018-05-24T21:34:11Z

src/cdk/table/cell.ts

@@ -59,6 +66,26 @@ export class CdkColumnDef {
  }
  _name: string;

+  /** Whether this column should be sticky positioned on the left of the row */
+  @Input('stickyLeft')


We typically use either start/end or before/after so that the term applies for RTL as well

jelbourn · 2018-05-24T21:34:11Z

src/cdk/table/has-sticky-state.ts

+ * sticky value.
+ * @docs-private
+ */
+export interface HasStickyState {


What do you think of CanStick?

jelbourn · 2018-05-24T21:34:11Z

src/cdk/table/has-sticky-state.ts

+
+  checkStickyChanged(): boolean;
+
+  resetStickyChanged(): void;


Needs descriptions for these other members

jelbourn · 2018-05-24T21:34:11Z

src/cdk/table/has-sticky-state.ts

+ * @docs-private
+ */
+export interface HasStickyState {
+  /** State of whether the sticky input has changed since it was last checked. */


Omit "State of"

jelbourn · 2018-05-24T21:34:11Z

src/cdk/table/row.ts

    if (!this._columnsDiffer) {
+      const columns = (changes['columns'] && changes['columns'].currentValue) || [];


When would columns not be defined?

If the sticky input changes, then changes: SimpleChanges will not have the columns property (since it didn't change). Prior to this change, the only time ngOnChange was called was when the columns changed; now this is not the only case.

jelbourn · 2018-05-24T21:34:11Z

src/cdk/table/table.ts

+   * the data source provides a new set of data or when a column definition changes its sticky
+   * input. May be called manually for cases where the cell content changes outside of these events.
+   */
+  updateStickyColumnStyles() {


You have another method with the same name that's internal; they should have different names if they're doing different things

Thanks, didn't catch that. Kept this as update (it removes/adds) and the internal one as add (it only adds)

jelbourn · 2018-05-24T21:34:11Z

src/cdk/table/table.ts

+      return acc || d.checkStickyChanged();
+    };
+
+    if (this._headerRowDefs.reduce(stickyCheckReducer, false)) {


Is this not just a some?

const hasStickyStateChanged = (d: HasStickyState) => d.checkStickyChanged(); if (this._headerRowDefs.some(hasStickyStateChanged)) { ... }

No, and I'll add a comment explaining why. The check needs to occur on every definition since it also resets its dirty state

jelbourn · 2018-05-24T21:34:11Z

src/cdk/table/has-sticky-state.ts

+    _hasStickyChanged: boolean = false;
+
+    /** Whether the sticky value has changed since this was last called. */
+    checkStickyChanged(): boolean {


hasStickyStateChanged?

jelbourn · 2018-05-24T21:34:11Z

src/cdk/table/table.spec.ts

+      });
+    }
+
+    describe('on flex layout', () => {


on "display: flex" table style"

jelbourn · 2018-05-24T21:34:11Z

src/lib/table/cell.ts

@@ -71,6 +71,12 @@ export class MatFooterCellDef extends CdkFooterCellDef {
 export class MatColumnDef extends CdkColumnDef {
  /** Unique name for this column. */
  @Input('matColumnDef') name: string;
+
+  /** Whether this column should be sticky positioned on the left of the right */
+  @Input() stickyLeft: boolean;


The vast, vast majority of cases are doing to want to stick to the start(left) side. Optimizing for the common case, I think we should just make the start/left position sticky and the other one stickyEnd.

We should talk separately about whether this should be something like cdkColumnSticky

SGTM, I agree the vast majority wants to just use sticky and mean it to be the start.

Based on angular#11483 (comment). Adds a custom tslint rule to enforce that we put getters before setters.

andrewseguin · 2018-05-29T17:54:26Z

Heads up - looks like RTL support is lacking. Left and right are absolute positions and the logic should reverse the column sticky position directions

Based on #11483 (comment). Adds a custom tslint rule to enforce that we put getters before setters.

ngbot · 2018-05-29T20:20:24Z

Hi @andrewseguin! This PR has merge conflicts due to recent upstream merges.
Please help to unblock it by resolving these conflicts. Thanks!

jelbourn

This PR should capture RTL as well, unless you want to retarget it to a branch

jelbourn · 2018-05-29T20:57:30Z

src/cdk/table/cell.ts

@@ -59,6 +66,26 @@ export class CdkColumnDef {
  }
  _name: string;

+  /** Whether this column should be sticky positioned on the start of the row */
+  @Input('sticky')


The argument to @Input() is unnecessary when it matches the property name (here and below)

cc @crisbeto might be another fun lint check :)
(also, at some point we should probably think about upstreaming these to codelyzer)

jelbourn · 2018-05-29T20:57:30Z

src/cdk/table/can-stick.ts

+/**
+ * Mixin to provide a directive with a function that checks if the sticky input has been
+ * changed since the last time the function was called. Essentially adds a dirty-check to the
+ * sticky value.


Include something in the description here that explains why the actual sticky property isn't included in the mixin

jelbourn · 2018-05-29T20:57:30Z

src/cdk/table/sticky-styler.ts

+   * @param stickCellCSS The CSS class that will be applied to every row/cell that has
+   *     sticky positioning applied.
+   */
+  constructor(private isNativeHtmlTable: boolean, private stickCellCSS: string) { }


stickCellCSS -> stickCellCss

andrewseguin · 2018-05-29T22:18:46Z

Added two commits:

Add support for RTL (directionality changes should influence sticky column positioning)
Move sticky setter/getter to the mixin

jelbourn

So, I started thinking about this in terms of how tree-shakable the code is. Let's chat on Thursday.

jelbourn · 2018-05-30T00:24:43Z

src/cdk/table/sticky-styler.ts

+    const cellWidths: number[] = this._getCellWidths(rows[0]);
+    const startPositions = this._getStickyStartColumnPositions(cellWidths, stickyStartStates);
+    const endPositions = this._getStickyEndColumnPositions(cellWidths, stickyEndStates);
+    const isLtr = this.direction === 'ltr';


You should invert this; it's better to explicitly check for RTL instead of LTR. We've had cases where the check was like this and dir ended up being empty- the component then assumed it was in RTL.

amcdnl

Looks good overall.

amcdnl · 2018-06-04T16:44:40Z

src/cdk/table/sticky-styler.ts

+    const endPositions = this._getStickyEndColumnPositions(cellWidths, stickyEndStates);
+    const isRtl = this.direction === 'rtl';
+
+    for (let row of rows) {


Why let vs `const?

amcdnl · 2018-06-04T16:44:40Z

src/cdk/table/sticky-styler.ts

+      return;
+    }
+
+    const numCells = rows[0].children.length;


I'd make a pointer to rows[0], its used here and below.

amcdnl · 2018-06-04T16:48:19Z

One footnote of this is its not compatible with virtual scrolling, we would need to rethink some of this when we apply that strategy.

jelbourn

LGTM

tatsujb · 2018-06-08T07:37:12Z

Amazing!!! 😃 Could we have a minor release to test out this feature pretty please? 💐

EDIT : if i'm working straight off of master what sort of syntax should I employ to sticky a column?

andrewseguin · 2018-06-08T16:19:44Z

For examples on how to use the sticky stuff, check out the examples that start with "table-sticky-*"

https://github.com/angular/material2/tree/master/src/material-examples

jelbourn · 2018-06-08T17:29:52Z

Next minor release is probably going to be in a couple weeks

tatsujb · 2018-06-11T08:22:28Z

@andrewseguin thanks! I haven't figured out how to have an angular cli boilerplater with master version of material2 though. (tried npm i angular/material2#master got a weird "material2-srcs": "github:angular/material2#master", in pmy package json. which did not load material, i tried adding npm i @angular/material then moving the contents of the material2-srcs in node-modules to @angular/material but as I expected that did not work.)

...sorry I'm a beginner 😢 (I really really want to train up my sticky column use because I plan to replace my hacked-in sticky columns with the official ones as soon as they drop)

Abhishek-Shrotriya · 2018-06-14T14:33:35Z

Hi, is there any specific date when the Mat-table release with sticky/ pinned columns for IE be publicly available
Thanks for your help.

sadplace · 2018-06-14T14:54:22Z

Hi,

Yes, that is really cool and i really need the sticky columns for my project. So if possible i need to know more a less when this is going to be released. Thanks :)

tatsujb · 2018-06-15T07:23:21Z

@sadplace three comments higher : #11483 (comment)

jaya0selva · 2018-06-19T18:23:39Z

Sticky is not working in IE. In chrome also, Sticky column alignments are breaking while scrolling.

MrJitu · 2018-06-21T06:42:07Z

Hi, Sticky/Fixed header is not working in IE. Is there any plan to fix this issue in next release?

Misiu · 2018-06-21T08:31:24Z

@andrewseguin are You guys planning to add examples showing sticky header and columns to main material site (https://material.angular.io/)?
Material is awesome and each new feature should he highlighted on main site.
For example look at Kendo UI(https://demos.telerik.com/kendo-ui/) they are clearly showing what's new, what's updated.
Sticky header, footer and columns was one of most desired feature, but when You go to main site there isn't even a single example showing it.

jelbourn · 2018-06-21T16:49:05Z

IE11 explicitly won't be supported; we decided that the amount of code it would take to work around the absence of position: sticky (and the resources spent maintaining it) isn't worth it based on its share of browser users.

Andrew was just able to finish up the feature before going out-of-office for a while; I'd be happy to accept PRs that add examples for the docs site.

Gwindorith · 2018-07-04T14:15:01Z

Hi!

I have updated to the latest version, but if i add the sticky keyword to multiple columns, the columns go behind each other other then staying at the position where they are.

So all three of my colums end up sticky on the left side of the screen:

`
<th mat-header-cell *matHeaderCellDef mat-sort-header> Resourcegroup
<td mat-cell *matCellDef="let element"> {{element.resourceGroup.resourceGroup}}

    <ng-container matColumnDef="description" sticky>
      <th mat-header-cell *matHeaderCellDef mat-sort-header> Name </th>
      <td mat-cell style="white-space: nowrap; padding-right: 8px;" *matCellDef="let element"> {{element.resourceGroup.description}} </td>
    </ng-container>

    <ng-container matColumnDef="status" sticky>
      <th mat-header-cell class="headerPadding" *matHeaderCellDef> status </th>
      <td mat-cell style="white-space: nowrap; padding-right: 10px;" *matCellDef="let element"> {{element.status}} </td>
    </ng-container>

`

Please advice!

volei · 2018-07-06T09:03:03Z

I edited, because in the meanwhile found more info and solutions:

I have a similar problem. It seems that it is browser dependant:

2nd and 3rd bottom sticky rows go behind each other with a minimal vertical offset (2px)
(except for:
-- 1st footer row. But has clientHeight automatically set to 2,
-- Footer row with text directly written into HTML DOM, thus not being {{double-curly-brace bound text}}.
I found out that in case of only {{}}-text the cdk sets the default clientHeight of the row to 2.
My 2 top sticky rows stick ok. Also left and right columns
- Problem so far only in Chrome (Version 67.0.3396.99 64bit)
In Firefox Quantum everything is ok, never hides a sticky row. (even without any solution like below.)
I am using native <table cdk-table ...> with <td cdk-footer-cell ...>

My solution No.1: Attach &zwnj; before the {{}}-placeholders (see [https://stackoverflow.com/questions/2812253/invisible-delimiter-for-strings-in-html]). This simulates actual HTML-text.

My solution No. 2: Define height: 20px; or font-size: medium; in CSS or anything similar in cdk-cell, cdk-header-cell, cdk-footer-cell or in the row's CSS-classes. But this is rather painful, if you do not have a comprehensive CSS-strategy.

updated yesterday, July 5th (v.6.3):

  "dependencies": {
    "@angular/animations": "^6.0.7",
    "@angular/cdk": "github:angular/cdk-builds",
    "@angular/common": "^6.0.7",
    "@angular/compiler": "^6.0.7",
    "@angular/core": "^6.0.7",
    "@angular/flex-layout": "^6.0.0-beta.16",
    "@angular/forms": "^6.0.7",
    "@angular/http": "^6.0.7",
    "@angular/material": "github:angular/material2-builds",
    "@angular/platform-browser": "^6.0.7",
    "@angular/platform-browser-dynamic": "^6.0.7",
    "@angular/router": "^6.0.7",
    "core-js": "^2.5.7",
    "npm": "^6.1.0",
    "rxjs": "^6.2.1",
    "zone.js": "^0.8.26"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.6.8",
    "@angular/cli": "^6.0.8",
    "@angular/compiler-cli": "^6.0.7",
    "@angular/language-service": "^6.0.7",
    "@types/jasmine": "^2.8.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "codelyzer": "~4.2.1",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~1.7.1",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "^1.4.3",
    "karma-jasmine": "~1.1.1",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "^5.3.2",
    "ts-node": "~5.0.1",
    "tslint": "~5.9.1",
    "typescript": "~2.7.2"

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andrewseguin requested a review from jelbourn May 23, 2018

andrewseguin requested a review from amcdnl as a code owner May 23, 2018

googlebot added the cla: yes label May 23, 2018

andrewseguin added the target: minor label May 23, 2018

jelbourn reviewed May 24, 2018

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andrewseguin force-pushed the andrewseguin:table-sticky branch from 785d480 to 81623c4 May 25, 2018

crisbeto added a commit to crisbeto/material2 that referenced this pull request May 26, 2018

build: add tslint rule to ensure that setters are declared after getters

0cbe713

Based on angular#11483 (comment). Adds a custom tslint rule to enforce that we put getters before setters.

crisbeto mentioned this pull request May 26, 2018

build: add tslint rule to ensure that setters are declared after getters #11522

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build: add tslint rule to ensure that setters are declared after getters

df7d3a5

Based on #11483 (comment). Adds a custom tslint rule to enforce that we put getters before setters.

jelbourn reviewed May 29, 2018

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andrewseguin added 7 commits May 23, 2018

feat(table): support sticky headers, footers, and columns

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review

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support rtl sticky columns

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move sticky to mixin

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add bidi to bazel BUILD for spec

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fix prerender; reverse rtl

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andrewseguin force-pushed the andrewseguin:table-sticky branch from 0899053 to 9a85a3d Jun 5, 2018

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minor changes for g3 internal tests

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andrewseguin mentioned this pull request Jun 6, 2018

[Feature Request] pinned columns on mat table #11644

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gangsthub mentioned this pull request Jun 27, 2018

Create helper for sticky positioning #474

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		if (!this._columnsDiffer) {
		const columns = (changes['columns'] && changes['columns'].currentValue) \|\| [];

angular / components

feat(table): support sticky headers, footers, and columns #11483

feat(table): support sticky headers, footers, and columns #11483

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