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columns.ts
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columns.ts
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/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {Directive, ElementRef, Input, Injectable, Optional} from '@angular/core';
import {
MediaMarshaller,
BaseDirective2,
StyleBuilder,
StyleDefinition,
StyleUtils,
} from '@angular/flex-layout/core';
import {coerceBooleanProperty} from '@angular/cdk/coercion';
const DEFAULT_VALUE = 'none';
const AUTO_SPECIFIER = '!';
export interface GridColumnsParent {
inline: boolean;
}
@Injectable({providedIn: 'root'})
export class GridColumnsStyleBuilder extends StyleBuilder {
buildStyles(input: string, parent: GridColumnsParent) {
input = input || DEFAULT_VALUE;
let auto = false;
if (input.endsWith(AUTO_SPECIFIER)) {
input = input.substring(0, input.indexOf(AUTO_SPECIFIER));
auto = true;
}
const css = {
'display': parent.inline ? 'inline-grid' : 'grid',
'grid-auto-columns': '',
'grid-template-columns': '',
};
const key = (auto ? 'grid-auto-columns' : 'grid-template-columns');
css[key] = input;
return css;
}
}
@Directive()
export class GridColumnsDirective extends BaseDirective2 {
protected DIRECTIVE_KEY = 'grid-columns';
@Input('gdInline')
get inline(): boolean { return this._inline; }
set inline(val: boolean) { this._inline = coerceBooleanProperty(val); }
protected _inline = false;
constructor(protected elementRef: ElementRef,
// NOTE: not actually optional, but we need to force DI without a
// constructor call
@Optional() protected styleBuilder: GridColumnsStyleBuilder,
protected styler: StyleUtils,
protected marshal: MediaMarshaller) {
super(elementRef, styleBuilder, styler, marshal);
this.init();
}
// *********************************************
// Protected methods
// *********************************************
protected updateWithValue(value: string) {
this.styleCache = this.inline ? columnsInlineCache : columnsCache;
this.addStyles(value, {inline: this.inline});
}
}
const columnsCache: Map<string, StyleDefinition> = new Map();
const columnsInlineCache: Map<string, StyleDefinition> = new Map();
const inputs = [
'gdColumns',
'gdColumns.xs', 'gdColumns.sm', 'gdColumns.md', 'gdColumns.lg', 'gdColumns.xl',
'gdColumns.lt-sm', 'gdColumns.lt-md', 'gdColumns.lt-lg', 'gdColumns.lt-xl',
'gdColumns.gt-xs', 'gdColumns.gt-sm', 'gdColumns.gt-md', 'gdColumns.gt-lg'
];
const selector = `
[gdColumns],
[gdColumns.xs], [gdColumns.sm], [gdColumns.md], [gdColumns.lg], [gdColumns.xl],
[gdColumns.lt-sm], [gdColumns.lt-md], [gdColumns.lt-lg], [gdColumns.lt-xl],
[gdColumns.gt-xs], [gdColumns.gt-sm], [gdColumns.gt-md], [gdColumns.gt-lg]
`;
/**
* 'grid-template-columns' CSS Grid styling directive
* Configures the sizing for the columns in the grid
* Syntax: <column value> [auto]
* @see https://css-tricks.com/snippets/css/complete-guide-grid/#article-header-id-13
*/
@Directive({selector, inputs})
export class DefaultGridColumnsDirective extends GridColumnsDirective {
protected inputs = inputs;
}