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