import * as i0 from '@angular/core';
import { InjectionToken, Component, ViewEncapsulation, ChangeDetectionStrategy, Optional, Inject, Input, ContentChildren, Directive, NgModule } from '@angular/core';
import { setLines, MatLine, MatLineModule, MatCommonModule } from '@angular/material/core';
import { coerceNumberProperty } from '@angular/cdk/coercion';
import * as i1 from '@angular/cdk/bidi';

/**
 * Class for determining, from a list of tiles, the (row, col) position of each of those tiles
 * in the grid. This is necessary (rather than just rendering the tiles in normal document flow)
 * because the tiles can have a rowspan.
 *
 * The positioning algorithm greedily places each tile as soon as it encounters a gap in the grid
 * large enough to accommodate it so that the tiles still render in the same order in which they
 * are given.
 *
 * The basis of the algorithm is the use of an array to track the already placed tiles. Each
 * element of the array corresponds to a column, and the value indicates how many cells in that
 * column are already occupied; zero indicates an empty cell. Moving "down" to the next row
 * decrements each value in the tracking array (indicating that the column is one cell closer to
 * being free).
 *
 * @docs-private
 */
class TileCoordinator {
    constructor() {
        /** Index at which the search for the next gap will start. */
        this.columnIndex = 0;
        /** The current row index. */
        this.rowIndex = 0;
    }
    /** Gets the total number of rows occupied by tiles */
    get rowCount() {
        return this.rowIndex + 1;
    }
    /**
     * Gets the total span of rows occupied by tiles.
     * Ex: A list with 1 row that contains a tile with rowspan 2 will have a total rowspan of 2.
     */
    get rowspan() {
        const lastRowMax = Math.max(...this.tracker);
        // if any of the tiles has a rowspan that pushes it beyond the total row count,
        // add the difference to the rowcount
        return lastRowMax > 1 ? this.rowCount + lastRowMax - 1 : this.rowCount;
    }
    /**
     * Updates the tile positions.
     * @param numColumns Amount of columns in the grid.
     * @param tiles Tiles to be positioned.
     */
    update(numColumns, tiles) {
        this.columnIndex = 0;
        this.rowIndex = 0;
        this.tracker = new Array(numColumns);
        this.tracker.fill(0, 0, this.tracker.length);
        this.positions = tiles.map(tile => this._trackTile(tile));
    }
    /** Calculates the row and col position of a tile. */
    _trackTile(tile) {
        // Find a gap large enough for this tile.
        const gapStartIndex = this._findMatchingGap(tile.colspan);
        // Place tile in the resulting gap.
        this._markTilePosition(gapStartIndex, tile);
        // The next time we look for a gap, the search will start at columnIndex, which should be
        // immediately after the tile that has just been placed.
        this.columnIndex = gapStartIndex + tile.colspan;
        return new TilePosition(this.rowIndex, gapStartIndex);
    }
    /** Finds the next available space large enough to fit the tile. */
    _findMatchingGap(tileCols) {
        if (tileCols > this.tracker.length && (typeof ngDevMode === 'undefined' || ngDevMode)) {
            throw Error(`mat-grid-list: tile with colspan ${tileCols} is wider than ` +
                `grid with cols="${this.tracker.length}".`);
        }
        // Start index is inclusive, end index is exclusive.
        let gapStartIndex = -1;
        let gapEndIndex = -1;
        // Look for a gap large enough to fit the given tile. Empty spaces are marked with a zero.
        do {
            // If we've reached the end of the row, go to the next row.
            if (this.columnIndex + tileCols > this.tracker.length) {
                this._nextRow();
                gapStartIndex = this.tracker.indexOf(0, this.columnIndex);
                gapEndIndex = this._findGapEndIndex(gapStartIndex);
                continue;
            }
            gapStartIndex = this.tracker.indexOf(0, this.columnIndex);
            // If there are no more empty spaces in this row at all, move on to the next row.
            if (gapStartIndex == -1) {
                this._nextRow();
                gapStartIndex = this.tracker.indexOf(0, this.columnIndex);
                gapEndIndex = this._findGapEndIndex(gapStartIndex);
                continue;
            }
            gapEndIndex = this._findGapEndIndex(gapStartIndex);
            // If a gap large enough isn't found, we want to start looking immediately after the current
            // gap on the next iteration.
            this.columnIndex = gapStartIndex + 1;
            // Continue iterating until we find a gap wide enough for this tile. Since gapEndIndex is
            // exclusive, gapEndIndex is 0 means we didn't find a gap and should continue.
        } while (gapEndIndex - gapStartIndex < tileCols || gapEndIndex == 0);
        // If we still didn't manage to find a gap, ensure that the index is
        // at least zero so the tile doesn't get pulled out of the grid.
        return Math.max(gapStartIndex, 0);
    }
    /** Move "down" to the next row. */
    _nextRow() {
        this.columnIndex = 0;
        this.rowIndex++;
        // Decrement all spaces by one to reflect moving down one row.
        for (let i = 0; i < this.tracker.length; i++) {
            this.tracker[i] = Math.max(0, this.tracker[i] - 1);
        }
    }
    /**
     * Finds the end index (exclusive) of a gap given the index from which to start looking.
     * The gap ends when a non-zero value is found.
     */
    _findGapEndIndex(gapStartIndex) {
        for (let i = gapStartIndex + 1; i < this.tracker.length; i++) {
            if (this.tracker[i] != 0) {
                return i;
            }
        }
        // The gap ends with the end of the row.
        return this.tracker.length;
    }
    /** Update the tile tracker to account for the given tile in the given space. */
    _markTilePosition(start, tile) {
        for (let i = 0; i < tile.colspan; i++) {
            this.tracker[start + i] = tile.rowspan;
        }
    }
}
/**
 * Simple data structure for tile position (row, col).
 * @docs-private
 */
class TilePosition {
    constructor(row, col) {
        this.row = row;
        this.col = col;
    }
}

/**
 * Injection token used to provide a grid list to a tile and to avoid circular imports.
 * @docs-private
 */
const MAT_GRID_LIST = new InjectionToken('MAT_GRID_LIST');

class MatGridTile {
    constructor(_element, _gridList) {
        this._element = _element;
        this._gridList = _gridList;
        this._rowspan = 1;
        this._colspan = 1;
    }
    /** Amount of rows that the grid tile takes up. */
    get rowspan() {
        return this._rowspan;
    }
    set rowspan(value) {
        this._rowspan = Math.round(coerceNumberProperty(value));
    }
    /** Amount of columns that the grid tile takes up. */
    get colspan() {
        return this._colspan;
    }
    set colspan(value) {
        this._colspan = Math.round(coerceNumberProperty(value));
    }
    /**
     * Sets the style of the grid-tile element.  Needs to be set manually to avoid
     * "Changed after checked" errors that would occur with HostBinding.
     */
    _setStyle(property, value) {
        this._element.nativeElement.style[property] = value;
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridTile, deps: [{ token: i0.ElementRef }, { token: MAT_GRID_LIST, optional: true }], target: i0.ɵɵFactoryTarget.Component }); }
    static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.1.1", type: MatGridTile, selector: "mat-grid-tile", inputs: { rowspan: "rowspan", colspan: "colspan" }, host: { properties: { "attr.rowspan": "rowspan", "attr.colspan": "colspan" }, classAttribute: "mat-grid-tile" }, exportAs: ["matGridTile"], ngImport: i0, template: "<div class=\"mat-grid-tile-content\">\n  <ng-content></ng-content>\n</div>\n", styles: [".mat-grid-list{display:block;position:relative}.mat-grid-tile{display:block;position:absolute;overflow:hidden}.mat-grid-tile .mat-grid-tile-header,.mat-grid-tile .mat-grid-tile-footer{display:flex;align-items:center;height:48px;color:#fff;background:rgba(0,0,0,.38);overflow:hidden;padding:0 16px;position:absolute;left:0;right:0}.mat-grid-tile .mat-grid-tile-header>*,.mat-grid-tile .mat-grid-tile-footer>*{margin:0;padding:0;font-weight:normal;font-size:inherit}.mat-grid-tile .mat-grid-tile-header.mat-2-line,.mat-grid-tile .mat-grid-tile-footer.mat-2-line{height:68px}.mat-grid-tile .mat-grid-list-text{display:flex;flex-direction:column;flex:auto;box-sizing:border-box;overflow:hidden}.mat-grid-tile .mat-grid-list-text>*{margin:0;padding:0;font-weight:normal;font-size:inherit}.mat-grid-tile .mat-grid-list-text:empty{display:none}.mat-grid-tile .mat-grid-tile-header{top:0}.mat-grid-tile .mat-grid-tile-footer{bottom:0}.mat-grid-tile .mat-grid-avatar{padding-right:16px}[dir=rtl] .mat-grid-tile .mat-grid-avatar{padding-right:0;padding-left:16px}.mat-grid-tile .mat-grid-avatar:empty{display:none}.mat-grid-tile-header{font-size:var(--mat-grid-list-tile-header-primary-text-size)}.mat-grid-tile-header .mat-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;box-sizing:border-box}.mat-grid-tile-header .mat-line:nth-child(n+2){font-size:var(--mat-grid-list-tile-header-secondary-text-size)}.mat-grid-tile-footer{font-size:var(--mat-grid-list-tile-footer-primary-text-size)}.mat-grid-tile-footer .mat-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;box-sizing:border-box}.mat-grid-tile-footer .mat-line:nth-child(n+2){font-size:var(--mat-grid-list-tile-footer-secondary-text-size)}.mat-grid-tile-content{top:0;left:0;right:0;bottom:0;position:absolute;display:flex;align-items:center;justify-content:center;height:100%;padding:0;margin:0}"], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridTile, decorators: [{
            type: Component,
            args: [{ selector: 'mat-grid-tile', exportAs: 'matGridTile', host: {
                        'class': 'mat-grid-tile',
                        // Ensures that the "rowspan" and "colspan" input value is reflected in
                        // the DOM. This is needed for the grid-tile harness.
                        '[attr.rowspan]': 'rowspan',
                        '[attr.colspan]': 'colspan',
                    }, encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.OnPush, template: "<div class=\"mat-grid-tile-content\">\n  <ng-content></ng-content>\n</div>\n", styles: [".mat-grid-list{display:block;position:relative}.mat-grid-tile{display:block;position:absolute;overflow:hidden}.mat-grid-tile .mat-grid-tile-header,.mat-grid-tile .mat-grid-tile-footer{display:flex;align-items:center;height:48px;color:#fff;background:rgba(0,0,0,.38);overflow:hidden;padding:0 16px;position:absolute;left:0;right:0}.mat-grid-tile .mat-grid-tile-header>*,.mat-grid-tile .mat-grid-tile-footer>*{margin:0;padding:0;font-weight:normal;font-size:inherit}.mat-grid-tile .mat-grid-tile-header.mat-2-line,.mat-grid-tile .mat-grid-tile-footer.mat-2-line{height:68px}.mat-grid-tile .mat-grid-list-text{display:flex;flex-direction:column;flex:auto;box-sizing:border-box;overflow:hidden}.mat-grid-tile .mat-grid-list-text>*{margin:0;padding:0;font-weight:normal;font-size:inherit}.mat-grid-tile .mat-grid-list-text:empty{display:none}.mat-grid-tile .mat-grid-tile-header{top:0}.mat-grid-tile .mat-grid-tile-footer{bottom:0}.mat-grid-tile .mat-grid-avatar{padding-right:16px}[dir=rtl] .mat-grid-tile .mat-grid-avatar{padding-right:0;padding-left:16px}.mat-grid-tile .mat-grid-avatar:empty{display:none}.mat-grid-tile-header{font-size:var(--mat-grid-list-tile-header-primary-text-size)}.mat-grid-tile-header .mat-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;box-sizing:border-box}.mat-grid-tile-header .mat-line:nth-child(n+2){font-size:var(--mat-grid-list-tile-header-secondary-text-size)}.mat-grid-tile-footer{font-size:var(--mat-grid-list-tile-footer-primary-text-size)}.mat-grid-tile-footer .mat-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;box-sizing:border-box}.mat-grid-tile-footer .mat-line:nth-child(n+2){font-size:var(--mat-grid-list-tile-footer-secondary-text-size)}.mat-grid-tile-content{top:0;left:0;right:0;bottom:0;position:absolute;display:flex;align-items:center;justify-content:center;height:100%;padding:0;margin:0}"] }]
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [MAT_GRID_LIST]
                }] }]; }, propDecorators: { rowspan: [{
                type: Input
            }], colspan: [{
                type: Input
            }] } });
class MatGridTileText {
    constructor(_element) {
        this._element = _element;
    }
    ngAfterContentInit() {
        setLines(this._lines, this._element);
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridTileText, deps: [{ token: i0.ElementRef }], target: i0.ɵɵFactoryTarget.Component }); }
    static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.1.1", type: MatGridTileText, selector: "mat-grid-tile-header, mat-grid-tile-footer", queries: [{ propertyName: "_lines", predicate: MatLine, descendants: true }], ngImport: i0, template: "<ng-content select=\"[mat-grid-avatar], [matGridAvatar]\"></ng-content>\n<div class=\"mat-grid-list-text\"><ng-content select=\"[mat-line], [matLine]\"></ng-content></div>\n<ng-content></ng-content>\n", changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridTileText, decorators: [{
            type: Component,
            args: [{ selector: 'mat-grid-tile-header, mat-grid-tile-footer', changeDetection: ChangeDetectionStrategy.OnPush, encapsulation: ViewEncapsulation.None, template: "<ng-content select=\"[mat-grid-avatar], [matGridAvatar]\"></ng-content>\n<div class=\"mat-grid-list-text\"><ng-content select=\"[mat-line], [matLine]\"></ng-content></div>\n<ng-content></ng-content>\n" }]
        }], ctorParameters: function () { return [{ type: i0.ElementRef }]; }, propDecorators: { _lines: [{
                type: ContentChildren,
                args: [MatLine, { descendants: true }]
            }] } });
/**
 * Directive whose purpose is to add the mat- CSS styling to this selector.
 * @docs-private
 */
class MatGridAvatarCssMatStyler {
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridAvatarCssMatStyler, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: MatGridAvatarCssMatStyler, selector: "[mat-grid-avatar], [matGridAvatar]", host: { classAttribute: "mat-grid-avatar" }, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridAvatarCssMatStyler, decorators: [{
            type: Directive,
            args: [{
                    selector: '[mat-grid-avatar], [matGridAvatar]',
                    host: { 'class': 'mat-grid-avatar' },
                }]
        }] });
/**
 * Directive whose purpose is to add the mat- CSS styling to this selector.
 * @docs-private
 */
class MatGridTileHeaderCssMatStyler {
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridTileHeaderCssMatStyler, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: MatGridTileHeaderCssMatStyler, selector: "mat-grid-tile-header", host: { classAttribute: "mat-grid-tile-header" }, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridTileHeaderCssMatStyler, decorators: [{
            type: Directive,
            args: [{
                    selector: 'mat-grid-tile-header',
                    host: { 'class': 'mat-grid-tile-header' },
                }]
        }] });
/**
 * Directive whose purpose is to add the mat- CSS styling to this selector.
 * @docs-private
 */
class MatGridTileFooterCssMatStyler {
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridTileFooterCssMatStyler, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: MatGridTileFooterCssMatStyler, selector: "mat-grid-tile-footer", host: { classAttribute: "mat-grid-tile-footer" }, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridTileFooterCssMatStyler, decorators: [{
            type: Directive,
            args: [{
                    selector: 'mat-grid-tile-footer',
                    host: { 'class': 'mat-grid-tile-footer' },
                }]
        }] });

/**
 * RegExp that can be used to check whether a value will
 * be allowed inside a CSS `calc()` expression.
 */
const cssCalcAllowedValue = /^-?\d+((\.\d+)?[A-Za-z%$]?)+$/;
/**
 * Sets the style properties for an individual tile, given the position calculated by the
 * Tile Coordinator.
 * @docs-private
 */
class TileStyler {
    constructor() {
        this._rows = 0;
        this._rowspan = 0;
    }
    /**
     * Adds grid-list layout info once it is available. Cannot be processed in the constructor
     * because these properties haven't been calculated by that point.
     *
     * @param gutterSize Size of the grid's gutter.
     * @param tracker Instance of the TileCoordinator.
     * @param cols Amount of columns in the grid.
     * @param direction Layout direction of the grid.
     */
    init(gutterSize, tracker, cols, direction) {
        this._gutterSize = normalizeUnits(gutterSize);
        this._rows = tracker.rowCount;
        this._rowspan = tracker.rowspan;
        this._cols = cols;
        this._direction = direction;
    }
    /**
     * Computes the amount of space a single 1x1 tile would take up (width or height).
     * Used as a basis for other calculations.
     * @param sizePercent Percent of the total grid-list space that one 1x1 tile would take up.
     * @param gutterFraction Fraction of the gutter size taken up by one 1x1 tile.
     * @return The size of a 1x1 tile as an expression that can be evaluated via CSS calc().
     */
    getBaseTileSize(sizePercent, gutterFraction) {
        // Take the base size percent (as would be if evenly dividing the size between cells),
        // and then subtracting the size of one gutter. However, since there are no gutters on the
        // edges, each tile only uses a fraction (gutterShare = numGutters / numCells) of the gutter
        // size. (Imagine having one gutter per tile, and then breaking up the extra gutter on the
        // edge evenly among the cells).
        return `(${sizePercent}% - (${this._gutterSize} * ${gutterFraction}))`;
    }
    /**
     * Gets The horizontal or vertical position of a tile, e.g., the 'top' or 'left' property value.
     * @param offset Number of tiles that have already been rendered in the row/column.
     * @param baseSize Base size of a 1x1 tile (as computed in getBaseTileSize).
     * @return Position of the tile as a CSS calc() expression.
     */
    getTilePosition(baseSize, offset) {
        // The position comes the size of a 1x1 tile plus gutter for each previous tile in the
        // row/column (offset).
        return offset === 0 ? '0' : calc(`(${baseSize} + ${this._gutterSize}) * ${offset}`);
    }
    /**
     * Gets the actual size of a tile, e.g., width or height, taking rowspan or colspan into account.
     * @param baseSize Base size of a 1x1 tile (as computed in getBaseTileSize).
     * @param span The tile's rowspan or colspan.
     * @return Size of the tile as a CSS calc() expression.
     */
    getTileSize(baseSize, span) {
        return `(${baseSize} * ${span}) + (${span - 1} * ${this._gutterSize})`;
    }
    /**
     * Sets the style properties to be applied to a tile for the given row and column index.
     * @param tile Tile to which to apply the styling.
     * @param rowIndex Index of the tile's row.
     * @param colIndex Index of the tile's column.
     */
    setStyle(tile, rowIndex, colIndex) {
        // Percent of the available horizontal space that one column takes up.
        let percentWidthPerTile = 100 / this._cols;
        // Fraction of the vertical gutter size that each column takes up.
        // For example, if there are 5 columns, each column uses 4/5 = 0.8 times the gutter width.
        let gutterWidthFractionPerTile = (this._cols - 1) / this._cols;
        this.setColStyles(tile, colIndex, percentWidthPerTile, gutterWidthFractionPerTile);
        this.setRowStyles(tile, rowIndex, percentWidthPerTile, gutterWidthFractionPerTile);
    }
    /** Sets the horizontal placement of the tile in the list. */
    setColStyles(tile, colIndex, percentWidth, gutterWidth) {
        // Base horizontal size of a column.
        let baseTileWidth = this.getBaseTileSize(percentWidth, gutterWidth);
        // The width and horizontal position of each tile is always calculated the same way, but the
        // height and vertical position depends on the rowMode.
        let side = this._direction === 'rtl' ? 'right' : 'left';
        tile._setStyle(side, this.getTilePosition(baseTileWidth, colIndex));
        tile._setStyle('width', calc(this.getTileSize(baseTileWidth, tile.colspan)));
    }
    /**
     * Calculates the total size taken up by gutters across one axis of a list.
     */
    getGutterSpan() {
        return `${this._gutterSize} * (${this._rowspan} - 1)`;
    }
    /**
     * Calculates the total size taken up by tiles across one axis of a list.
     * @param tileHeight Height of the tile.
     */
    getTileSpan(tileHeight) {
        return `${this._rowspan} * ${this.getTileSize(tileHeight, 1)}`;
    }
    /**
     * Calculates the computed height and returns the correct style property to set.
     * This method can be implemented by each type of TileStyler.
     * @docs-private
     */
    getComputedHeight() {
        return null;
    }
}
/**
 * This type of styler is instantiated when the user passes in a fixed row height.
 * Example `<mat-grid-list cols="3" rowHeight="100px">`
 * @docs-private
 */
class FixedTileStyler extends TileStyler {
    constructor(fixedRowHeight) {
        super();
        this.fixedRowHeight = fixedRowHeight;
    }
    init(gutterSize, tracker, cols, direction) {
        super.init(gutterSize, tracker, cols, direction);
        this.fixedRowHeight = normalizeUnits(this.fixedRowHeight);
        if (!cssCalcAllowedValue.test(this.fixedRowHeight) &&
            (typeof ngDevMode === 'undefined' || ngDevMode)) {
            throw Error(`Invalid value "${this.fixedRowHeight}" set as rowHeight.`);
        }
    }
    setRowStyles(tile, rowIndex) {
        tile._setStyle('top', this.getTilePosition(this.fixedRowHeight, rowIndex));
        tile._setStyle('height', calc(this.getTileSize(this.fixedRowHeight, tile.rowspan)));
    }
    getComputedHeight() {
        return ['height', calc(`${this.getTileSpan(this.fixedRowHeight)} + ${this.getGutterSpan()}`)];
    }
    reset(list) {
        list._setListStyle(['height', null]);
        if (list._tiles) {
            list._tiles.forEach(tile => {
                tile._setStyle('top', null);
                tile._setStyle('height', null);
            });
        }
    }
}
/**
 * This type of styler is instantiated when the user passes in a width:height ratio
 * for the row height.  Example `<mat-grid-list cols="3" rowHeight="3:1">`
 * @docs-private
 */
class RatioTileStyler extends TileStyler {
    constructor(value) {
        super();
        this._parseRatio(value);
    }
    setRowStyles(tile, rowIndex, percentWidth, gutterWidth) {
        let percentHeightPerTile = percentWidth / this.rowHeightRatio;
        this.baseTileHeight = this.getBaseTileSize(percentHeightPerTile, gutterWidth);
        // Use padding-top and margin-top to maintain the given aspect ratio, as
        // a percentage-based value for these properties is applied versus the *width* of the
        // containing block. See http://www.w3.org/TR/CSS2/box.html#margin-properties
        tile._setStyle('marginTop', this.getTilePosition(this.baseTileHeight, rowIndex));
        tile._setStyle('paddingTop', calc(this.getTileSize(this.baseTileHeight, tile.rowspan)));
    }
    getComputedHeight() {
        return [
            'paddingBottom',
            calc(`${this.getTileSpan(this.baseTileHeight)} + ${this.getGutterSpan()}`),
        ];
    }
    reset(list) {
        list._setListStyle(['paddingBottom', null]);
        list._tiles.forEach(tile => {
            tile._setStyle('marginTop', null);
            tile._setStyle('paddingTop', null);
        });
    }
    _parseRatio(value) {
        const ratioParts = value.split(':');
        if (ratioParts.length !== 2 && (typeof ngDevMode === 'undefined' || ngDevMode)) {
            throw Error(`mat-grid-list: invalid ratio given for row-height: "${value}"`);
        }
        this.rowHeightRatio = parseFloat(ratioParts[0]) / parseFloat(ratioParts[1]);
    }
}
/**
 * This type of styler is instantiated when the user selects a "fit" row height mode.
 * In other words, the row height will reflect the total height of the container divided
 * by the number of rows.  Example `<mat-grid-list cols="3" rowHeight="fit">`
 *
 * @docs-private
 */
class FitTileStyler extends TileStyler {
    setRowStyles(tile, rowIndex) {
        // Percent of the available vertical space that one row takes up.
        let percentHeightPerTile = 100 / this._rowspan;
        // Fraction of the horizontal gutter size that each column takes up.
        let gutterHeightPerTile = (this._rows - 1) / this._rows;
        // Base vertical size of a column.
        let baseTileHeight = this.getBaseTileSize(percentHeightPerTile, gutterHeightPerTile);
        tile._setStyle('top', this.getTilePosition(baseTileHeight, rowIndex));
        tile._setStyle('height', calc(this.getTileSize(baseTileHeight, tile.rowspan)));
    }
    reset(list) {
        if (list._tiles) {
            list._tiles.forEach(tile => {
                tile._setStyle('top', null);
                tile._setStyle('height', null);
            });
        }
    }
}
/** Wraps a CSS string in a calc function */
function calc(exp) {
    return `calc(${exp})`;
}
/** Appends pixels to a CSS string if no units are given. */
function normalizeUnits(value) {
    return value.match(/([A-Za-z%]+)$/) ? value : `${value}px`;
}

// TODO(kara): Conditional (responsive) column count / row size.
// TODO(kara): Re-layout on window resize / media change (debounced).
// TODO(kara): gridTileHeader and gridTileFooter.
const MAT_FIT_MODE = 'fit';
class MatGridList {
    constructor(_element, _dir) {
        this._element = _element;
        this._dir = _dir;
        /** The amount of space between tiles. This will be something like '5px' or '2em'. */
        this._gutter = '1px';
    }
    /** Amount of columns in the grid list. */
    get cols() {
        return this._cols;
    }
    set cols(value) {
        this._cols = Math.max(1, Math.round(coerceNumberProperty(value)));
    }
    /** Size of the grid list's gutter in pixels. */
    get gutterSize() {
        return this._gutter;
    }
    set gutterSize(value) {
        this._gutter = `${value == null ? '' : value}`;
    }
    /** Set internal representation of row height from the user-provided value. */
    get rowHeight() {
        return this._rowHeight;
    }
    set rowHeight(value) {
        const newValue = `${value == null ? '' : value}`;
        if (newValue !== this._rowHeight) {
            this._rowHeight = newValue;
            this._setTileStyler(this._rowHeight);
        }
    }
    ngOnInit() {
        this._checkCols();
        this._checkRowHeight();
    }
    /**
     * The layout calculation is fairly cheap if nothing changes, so there's little cost
     * to run it frequently.
     */
    ngAfterContentChecked() {
        this._layoutTiles();
    }
    /** Throw a friendly error if cols property is missing */
    _checkCols() {
        if (!this.cols && (typeof ngDevMode === 'undefined' || ngDevMode)) {
            throw Error(`mat-grid-list: must pass in number of columns. ` + `Example: <mat-grid-list cols="3">`);
        }
    }
    /** Default to equal width:height if rowHeight property is missing */
    _checkRowHeight() {
        if (!this._rowHeight) {
            this._setTileStyler('1:1');
        }
    }
    /** Creates correct Tile Styler subtype based on rowHeight passed in by user */
    _setTileStyler(rowHeight) {
        if (this._tileStyler) {
            this._tileStyler.reset(this);
        }
        if (rowHeight === MAT_FIT_MODE) {
            this._tileStyler = new FitTileStyler();
        }
        else if (rowHeight && rowHeight.indexOf(':') > -1) {
            this._tileStyler = new RatioTileStyler(rowHeight);
        }
        else {
            this._tileStyler = new FixedTileStyler(rowHeight);
        }
    }
    /** Computes and applies the size and position for all children grid tiles. */
    _layoutTiles() {
        if (!this._tileCoordinator) {
            this._tileCoordinator = new TileCoordinator();
        }
        const tracker = this._tileCoordinator;
        const tiles = this._tiles.filter(tile => !tile._gridList || tile._gridList === this);
        const direction = this._dir ? this._dir.value : 'ltr';
        this._tileCoordinator.update(this.cols, tiles);
        this._tileStyler.init(this.gutterSize, tracker, this.cols, direction);
        tiles.forEach((tile, index) => {
            const pos = tracker.positions[index];
            this._tileStyler.setStyle(tile, pos.row, pos.col);
        });
        this._setListStyle(this._tileStyler.getComputedHeight());
    }
    /** Sets style on the main grid-list element, given the style name and value. */
    _setListStyle(style) {
        if (style) {
            this._element.nativeElement.style[style[0]] = style[1];
        }
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridList, deps: [{ token: i0.ElementRef }, { token: i1.Directionality, optional: true }], target: i0.ɵɵFactoryTarget.Component }); }
    static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.1.1", type: MatGridList, selector: "mat-grid-list", inputs: { cols: "cols", gutterSize: "gutterSize", rowHeight: "rowHeight" }, host: { properties: { "attr.cols": "cols" }, classAttribute: "mat-grid-list" }, providers: [
            {
                provide: MAT_GRID_LIST,
                useExisting: MatGridList,
            },
        ], queries: [{ propertyName: "_tiles", predicate: MatGridTile, descendants: true }], exportAs: ["matGridList"], ngImport: i0, template: "<div>\n  <ng-content></ng-content>\n</div>", styles: [".mat-grid-list{display:block;position:relative}.mat-grid-tile{display:block;position:absolute;overflow:hidden}.mat-grid-tile .mat-grid-tile-header,.mat-grid-tile .mat-grid-tile-footer{display:flex;align-items:center;height:48px;color:#fff;background:rgba(0,0,0,.38);overflow:hidden;padding:0 16px;position:absolute;left:0;right:0}.mat-grid-tile .mat-grid-tile-header>*,.mat-grid-tile .mat-grid-tile-footer>*{margin:0;padding:0;font-weight:normal;font-size:inherit}.mat-grid-tile .mat-grid-tile-header.mat-2-line,.mat-grid-tile .mat-grid-tile-footer.mat-2-line{height:68px}.mat-grid-tile .mat-grid-list-text{display:flex;flex-direction:column;flex:auto;box-sizing:border-box;overflow:hidden}.mat-grid-tile .mat-grid-list-text>*{margin:0;padding:0;font-weight:normal;font-size:inherit}.mat-grid-tile .mat-grid-list-text:empty{display:none}.mat-grid-tile .mat-grid-tile-header{top:0}.mat-grid-tile .mat-grid-tile-footer{bottom:0}.mat-grid-tile .mat-grid-avatar{padding-right:16px}[dir=rtl] .mat-grid-tile .mat-grid-avatar{padding-right:0;padding-left:16px}.mat-grid-tile .mat-grid-avatar:empty{display:none}.mat-grid-tile-header{font-size:var(--mat-grid-list-tile-header-primary-text-size)}.mat-grid-tile-header .mat-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;box-sizing:border-box}.mat-grid-tile-header .mat-line:nth-child(n+2){font-size:var(--mat-grid-list-tile-header-secondary-text-size)}.mat-grid-tile-footer{font-size:var(--mat-grid-list-tile-footer-primary-text-size)}.mat-grid-tile-footer .mat-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;box-sizing:border-box}.mat-grid-tile-footer .mat-line:nth-child(n+2){font-size:var(--mat-grid-list-tile-footer-secondary-text-size)}.mat-grid-tile-content{top:0;left:0;right:0;bottom:0;position:absolute;display:flex;align-items:center;justify-content:center;height:100%;padding:0;margin:0}"], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridList, decorators: [{
            type: Component,
            args: [{ selector: 'mat-grid-list', exportAs: 'matGridList', host: {
                        'class': 'mat-grid-list',
                        // Ensures that the "cols" input value is reflected in the DOM. This is
                        // needed for the grid-list harness.
                        '[attr.cols]': 'cols',
                    }, providers: [
                        {
                            provide: MAT_GRID_LIST,
                            useExisting: MatGridList,
                        },
                    ], changeDetection: ChangeDetectionStrategy.OnPush, encapsulation: ViewEncapsulation.None, template: "<div>\n  <ng-content></ng-content>\n</div>", styles: [".mat-grid-list{display:block;position:relative}.mat-grid-tile{display:block;position:absolute;overflow:hidden}.mat-grid-tile .mat-grid-tile-header,.mat-grid-tile .mat-grid-tile-footer{display:flex;align-items:center;height:48px;color:#fff;background:rgba(0,0,0,.38);overflow:hidden;padding:0 16px;position:absolute;left:0;right:0}.mat-grid-tile .mat-grid-tile-header>*,.mat-grid-tile .mat-grid-tile-footer>*{margin:0;padding:0;font-weight:normal;font-size:inherit}.mat-grid-tile .mat-grid-tile-header.mat-2-line,.mat-grid-tile .mat-grid-tile-footer.mat-2-line{height:68px}.mat-grid-tile .mat-grid-list-text{display:flex;flex-direction:column;flex:auto;box-sizing:border-box;overflow:hidden}.mat-grid-tile .mat-grid-list-text>*{margin:0;padding:0;font-weight:normal;font-size:inherit}.mat-grid-tile .mat-grid-list-text:empty{display:none}.mat-grid-tile .mat-grid-tile-header{top:0}.mat-grid-tile .mat-grid-tile-footer{bottom:0}.mat-grid-tile .mat-grid-avatar{padding-right:16px}[dir=rtl] .mat-grid-tile .mat-grid-avatar{padding-right:0;padding-left:16px}.mat-grid-tile .mat-grid-avatar:empty{display:none}.mat-grid-tile-header{font-size:var(--mat-grid-list-tile-header-primary-text-size)}.mat-grid-tile-header .mat-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;box-sizing:border-box}.mat-grid-tile-header .mat-line:nth-child(n+2){font-size:var(--mat-grid-list-tile-header-secondary-text-size)}.mat-grid-tile-footer{font-size:var(--mat-grid-list-tile-footer-primary-text-size)}.mat-grid-tile-footer .mat-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;box-sizing:border-box}.mat-grid-tile-footer .mat-line:nth-child(n+2){font-size:var(--mat-grid-list-tile-footer-secondary-text-size)}.mat-grid-tile-content{top:0;left:0;right:0;bottom:0;position:absolute;display:flex;align-items:center;justify-content:center;height:100%;padding:0;margin:0}"] }]
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i1.Directionality, decorators: [{
                    type: Optional
                }] }]; }, propDecorators: { _tiles: [{
                type: ContentChildren,
                args: [MatGridTile, { descendants: true }]
            }], cols: [{
                type: Input
            }], gutterSize: [{
                type: Input
            }], rowHeight: [{
                type: Input
            }] } });

class MatGridListModule {
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridListModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }
    static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "14.0.0", version: "16.1.1", ngImport: i0, type: MatGridListModule, declarations: [MatGridList,
            MatGridTile,
            MatGridTileText,
            MatGridTileHeaderCssMatStyler,
            MatGridTileFooterCssMatStyler,
            MatGridAvatarCssMatStyler], imports: [MatLineModule, MatCommonModule], exports: [MatGridList,
            MatGridTile,
            MatGridTileText,
            MatLineModule,
            MatCommonModule,
            MatGridTileHeaderCssMatStyler,
            MatGridTileFooterCssMatStyler,
            MatGridAvatarCssMatStyler] }); }
    static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridListModule, imports: [MatLineModule, MatCommonModule, MatLineModule,
            MatCommonModule] }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MatGridListModule, decorators: [{
            type: NgModule,
            args: [{
                    imports: [MatLineModule, MatCommonModule],
                    exports: [
                        MatGridList,
                        MatGridTile,
                        MatGridTileText,
                        MatLineModule,
                        MatCommonModule,
                        MatGridTileHeaderCssMatStyler,
                        MatGridTileFooterCssMatStyler,
                        MatGridAvatarCssMatStyler,
                    ],
                    declarations: [
                        MatGridList,
                        MatGridTile,
                        MatGridTileText,
                        MatGridTileHeaderCssMatStyler,
                        MatGridTileFooterCssMatStyler,
                        MatGridAvatarCssMatStyler,
                    ],
                }]
        }] });

// Privately exported for the grid-list harness.
const ɵTileCoordinator = TileCoordinator;

/**
 * Generated bundle index. Do not edit.
 */

export { MatGridAvatarCssMatStyler, MatGridList, MatGridListModule, MatGridTile, MatGridTileFooterCssMatStyler, MatGridTileHeaderCssMatStyler, MatGridTileText, ɵTileCoordinator };
//# sourceMappingURL=grid-list.mjs.map