mark/bower_components/jspdf-autotable/src/main.js

/**
 * jsPDF AutoTable plugin __VERSION__
 * Copyright (c) 2014 Simon Bengtsson, https://github.com/simonbengtsson/jsPDF-AutoTable
 *
 * Licensed under the MIT License.
 * http://opensource.org/licenses/mit-license
 *
 * @preserve
 */
(function (API) {
    'use strict';

    // Ratio between font size and font height. The number comes from jspdf's source code
    var FONT_ROW_RATIO = 1.15;

    var doc, // The current jspdf instance
        cursor, // An object keeping track of the x and y position of the next table cell to draw
        settings, // Default options merged with user options
        pageCount, // The  page count the current table spans
        table; // The current Table instance

    // Base style for all themes
    var defaultStyles = {
        cellPadding: 5,
        fontSize: 10,
        font: "helvetica", // helvetica, times, courier
        lineColor: 200,
        lineWidth: 0.1,
        fontStyle: 'normal', // normal, bold, italic, bolditalic
        overflow: 'ellipsize', // visible, hidden, ellipsize or linebreak
        fillColor: 255,
        textColor: 20,
        halign: 'left', // left, center, right
        valign: 'top', // top, middle, bottom
        fillStyle: 'F', // 'S', 'F' or 'DF' (stroke, fill or fill then stroke)
        rowHeight: 20,
        columnWidth: 'auto'
    };

    // Styles for the themes
    var themes = {
        'striped': {
            table: {
                fillColor: 255,
                textColor: 80,
                fontStyle: 'normal',
                fillStyle: 'F'
            },
            header: {
                textColor: 255,
                fillColor: [41, 128, 185],
                rowHeight: 23,
                fontStyle: 'bold'
            },
            body: {},
            alternateRow: {fillColor: 245}
        },
        'grid': {
            table: {
                fillColor: 255,
                textColor: 80,
                fontStyle: 'normal',
                lineWidth: 0.1,
                fillStyle: 'DF'
            },
            header: {
                textColor: 255,
                fillColor: [26, 188, 156],
                rowHeight: 23,
                fillStyle: 'F',
                fontStyle: 'bold'
            },
            body: {},
            alternateRow: {}
        },
        'plain': {header: {fontStyle: 'bold'}}
    };

    // See README.md for documentation of the options
    // See examples.js for usage examples
    var defaultOptions = function () {
        return {
            // Styling
            theme: 'striped', // 'striped', 'grid' or 'plain'
            styles: {},
            headerStyles: {},
            bodyStyles: {},
            alternateRowStyles: {},
            columnStyles: {},

            // Properties
            startY: false, // false indicates the margin.top value
            margin: 40,
            pageBreak: 'auto', // 'auto', 'avoid', 'always'
            tableWidth: 'auto', // number, 'auto', 'wrap'

            // Hooks
            createdHeaderCell: function (cell, data) {},
            createdCell: function (cell, data) {},
            drawHeaderRow: function (row, data) {},
            drawRow: function (row, data) {},
            drawHeaderCell: function (cell, data) {},
            drawCell: function (cell, data) {},
            beforePageContent: function (data) {},
            afterPageContent: function (data) {}
        }
    };

    /**
     * Create a table from a set of rows and columns.
     *
     * @param {Object[]|String[]} headers Either as an array of objects or array of strings
     * @param {Object[][]|String[][]} data Either as an array of objects or array of strings
     * @param {Object} [options={}] Options that will override the default ones
     */
    API.autoTable = function (headers, data, options) {
        validateInput(headers, data, options);
        doc = this;
        settings = initOptions(options || {});
        pageCount = 1;

        // Need a cursor y as it needs to be reset after each page (row.y can't do that)
        cursor = { y: settings.startY === false ? settings.margin.top : settings.startY };

        var userStyles = {
            textColor: 30, // Setting text color to dark gray as it can't be obtained from jsPDF
            fontSize: doc.internal.getFontSize(),
            fontStyle: doc.internal.getFont().fontStyle
        };

        // Create the table model with its columns, rows and cells
        createModels(headers, data);
        calculateWidths();

        // Page break if there is room for only the first data row
        var firstRowHeight = table.rows[0] && settings.pageBreak === 'auto' ? table.rows[0].height : 0;
        var minTableBottomPos = settings.startY + settings.margin.bottom + table.headerRow.height + firstRowHeight;
        if (settings.pageBreak === 'avoid') {
            minTableBottomPos += table.height;
        }
        if ((settings.pageBreak === 'always' && settings.startY !== false) ||
            (settings.startY !== false && minTableBottomPos > doc.internal.pageSize.height)) {
            doc.addPage();
            cursor.y = settings.margin.top;
        }

        applyStyles(userStyles);
        settings.beforePageContent(hooksData());
        if (settings.drawHeaderRow(table.headerRow, hooksData({row: table.headerRow})) !== false) {
            printRow(table.headerRow, settings.drawHeaderCell);
        }
        applyStyles(userStyles);
        printRows();
        settings.afterPageContent(hooksData());

        applyStyles(userStyles);

        return this;
    };

    /**
     * Returns the Y position of the last drawn cell
     * @returns int
     */
    API.autoTableEndPosY = function () {
        if (typeof cursor === 'undefined' || typeof cursor.y === 'undefined') {
            return 0;
        }
        return cursor.y;
    };

    /**
     * Parses an html table
     *
     * @param tableElem Html table element
     * @param includeHiddenRows Defaults to false
     * @returns Object Object with two properties, columns and rows
     */
    API.autoTableHtmlToJson = function (tableElem, includeHiddenRows) {
        includeHiddenRows = includeHiddenRows || false;

        var header = tableElem.rows[0];
        var result = {columns: [], rows: []};

        for (var k = 0; k < header.cells.length; k++) {
            var cell = header.cells[k];
            result.columns.push(typeof cell !== 'undefined' ? cell.textContent : '');
        }

        for (var i = 1; i < tableElem.rows.length; i++) {
            var tableRow = tableElem.rows[i];
            var style = window.getComputedStyle(tableRow);
            if (includeHiddenRows || style.display !== 'none') {
                var rowData = [];
                for (var j = 0; j < header.cells.length; j++) {
                    rowData.push(typeof tableRow.cells[j] !== 'undefined' ? tableRow.cells[j].textContent : '');
                }
                result.rows.push(rowData);
            }
        }

        result.data = result.rows; // Deprecated
        return result;
    };

    /**
     * Improved text function with halign and valign support
     * Inspiration from: http://stackoverflow.com/questions/28327510/align-text-right-using-jspdf/28433113#28433113
     */
    API.autoTableText = function (text, x, y, styles) {
        if (typeof x !== 'number' || typeof y !== 'number') {
            console.error('The x and y parameters are required. Missing for the text: ', text);
        }
        var fontSize = doc.internal.getFontSize() / doc.internal.scaleFactor;

        // As defined in jsPDF source code
        var lineHeightProportion = FONT_ROW_RATIO;

        var splitRegex = /\r\n|\r|\n/g;
        var splittedText = null;
        var lineCount = 1;
        if (styles.valign === 'middle' || styles.valign === 'bottom' || styles.halign === 'center' || styles.halign === 'right') {
            splittedText = typeof text === 'string' ? text.split(splitRegex) : text;

            lineCount = splittedText.length || 1;
        }

        // Align the top
        y += fontSize * (2 - lineHeightProportion);

        if (styles.valign === 'middle')
            y -= (lineCount / 2) * fontSize;
        else if (styles.valign === 'bottom')
            y -= lineCount * fontSize;

        if (styles.halign === 'center' || styles.halign === 'right') {
            var alignSize = fontSize;
            if (styles.halign === 'center')
                alignSize *= 0.5;

            if (lineCount >= 1) {
                for (var iLine = 0; iLine < splittedText.length; iLine++) {
                    doc.text(splittedText[iLine], x - doc.getStringUnitWidth(splittedText[iLine]) * alignSize, y);
                    y += fontSize;
                }
                return doc;
            }
            x -= doc.getStringUnitWidth(text) * alignSize;
        }

        doc.text(text, x, y);
        return doc;
    };

    function validateInput(headers, data, options) {
        if (!headers || typeof headers !== 'object') {
            console.error("The headers should be an object or array, is: " + typeof headers);
        }

        if (!data || typeof data !== 'object') {
            console.error("The data should be an object or array, is: " + typeof data);
        }

        if (!!options && typeof options !== 'object') {
            console.error("The data should be an object or array, is: " + typeof data);
        }

        if (!Array.prototype.forEach) {
            console.error("The current browser does not support Array.prototype.forEach which is required for " +
                "jsPDF-AutoTable. You can try polyfilling it by including this script " +
                "https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach#Polyfill");
        }
    }

    function initOptions(userOptions) {
        var settings = extend(defaultOptions(), userOptions);

        // Options
        if (typeof settings.extendWidth !== 'undefined') {
            settings.tableWidth = settings.extendWidth ? 'auto' : 'wrap';
            console.error("Use of deprecated option: extendWidth, use tableWidth instead.");
        }
        if (typeof settings.margins !== 'undefined') {
            if (typeof settings.margin === 'undefined') settings.margin = settings.margins;
            console.error("Use of deprecated option: margins, use margin instead.");
        }

        [['padding', 'cellPadding'], ['lineHeight', 'rowHeight'], 'fontSize', 'overflow'].forEach(function (o) {
            var deprecatedOption = typeof o === 'string' ? o : o[0];
            var style = typeof o === 'string' ? o : o[1];
            if (typeof settings[deprecatedOption] !== 'undefined') {
                if (typeof settings.styles[style] === 'undefined') {
                    settings.styles[style] = settings[deprecatedOption];
                }
                console.error("Use of deprecated option: " + deprecatedOption + ", use the style " + style + " instead.");
            }
        });

        // Unifying
        var marginSetting = settings.margin;
        settings.margin = {};
        if (typeof marginSetting.horizontal === 'number') {
            marginSetting.right = marginSetting.horizontal;
            marginSetting.left = marginSetting.horizontal;
        }
        if (typeof marginSetting.vertical === 'number') {
            marginSetting.top = marginSetting.vertical;
            marginSetting.bottom = marginSetting.vertical;
        }
        ['top', 'right', 'bottom', 'left'].forEach(function (side, i) {
            if (typeof marginSetting === 'number') {
                settings.margin[side] = marginSetting;
            } else {
                var key = Array.isArray(marginSetting) ? i : side;
                settings.margin[side] = typeof marginSetting[key] === 'number' ? marginSetting[key] : 40;
            }
        });

        return settings;
    }

    /**
     * Create models from the user input
     *
     * @param inputHeaders
     * @param inputData
     */
    function createModels(inputHeaders, inputData) {
        table = new Table();
        table.x = settings.margin.left;

        var splitRegex = /\r\n|\r|\n/g;

        // Header row and columns
        var headerRow = new Row(inputHeaders);
        headerRow.index = -1;

        var themeStyles = extend(defaultStyles, themes[settings.theme].table, themes[settings.theme].header);
        headerRow.styles = extend(themeStyles, settings.styles, settings.headerStyles);

        // Columns and header row
        inputHeaders.forEach(function (rawColumn, dataKey) {
            if (typeof rawColumn === 'object') {
                dataKey = typeof rawColumn.dataKey !== 'undefined' ? rawColumn.dataKey : rawColumn.key;
            }

            if (typeof rawColumn.width !== 'undefined') {
                console.error("Use of deprecated option: column.width, use column.styles.columnWidth instead.");
            }

            var col = new Column(dataKey);
            col.styles = settings.columnStyles[col.dataKey] || {};
            table.columns.push(col);

            var cell = new Cell();
            cell.raw = typeof rawColumn === 'object' ? rawColumn.title : rawColumn;
            cell.styles = extend(headerRow.styles);
            cell.text = '' + cell.raw;
            cell.contentWidth = cell.styles.cellPadding * 2 + getStringWidth(cell.text, cell.styles);
            cell.text = cell.text.split(splitRegex);

            headerRow.cells[dataKey] = cell;
            settings.createdHeaderCell(cell, {column: col, row: headerRow, settings: settings});
        });
        table.headerRow = headerRow;

        // Rows och cells
        inputData.forEach(function (rawRow, i) {
            var row = new Row(rawRow);
            var isAlternate = i % 2 === 0;
            var themeStyles = extend(defaultStyles, themes[settings.theme].table, isAlternate ? themes[settings.theme].alternateRow : {});
            var userStyles = extend(settings.styles, settings.bodyStyles, isAlternate ? settings.alternateRowStyles : {});
            row.styles = extend(themeStyles, userStyles);
            row.index = i;
            table.columns.forEach(function (column) {
                var cell = new Cell();
                cell.raw = rawRow[column.dataKey];
                cell.styles = extend(row.styles, column.styles);
                cell.text = typeof cell.raw !== 'undefined' ? '' + cell.raw : ''; // Stringify 0 and false, but not undefined
                row.cells[column.dataKey] = cell;
                settings.createdCell(cell, hooksData({column: column, row: row}));
                cell.contentWidth = cell.styles.cellPadding * 2 + getStringWidth(cell.text, cell.styles);
                cell.text = cell.text.split(splitRegex);
            });
            table.rows.push(row);
        });
    }

    /**
     * Calculate the column widths
     */
    function calculateWidths() {
        // Column and table content width
        var tableContentWidth = 0;
        table.columns.forEach(function (column) {
            column.contentWidth = table.headerRow.cells[column.dataKey].contentWidth;
            table.rows.forEach(function (row) {
                var cellWidth = row.cells[column.dataKey].contentWidth;
                if (cellWidth > column.contentWidth) {
                    column.contentWidth = cellWidth;
                }
            });
            column.width = column.contentWidth;
            tableContentWidth += column.contentWidth;
        });
        table.contentWidth = tableContentWidth;

        var maxTableWidth = doc.internal.pageSize.width - settings.margin.left - settings.margin.right;
        var preferredTableWidth = maxTableWidth; // settings.tableWidth === 'auto'
        if (typeof settings.tableWidth === 'number') {
            preferredTableWidth = settings.tableWidth;
        } else if (settings.tableWidth === 'wrap') {
            preferredTableWidth = table.contentWidth;
        }
        table.width = preferredTableWidth < maxTableWidth ? preferredTableWidth : maxTableWidth;

        // To avoid subjecting columns with little content with the chosen overflow method,
        // never shrink a column more than the table divided by column count (its "fair part")
        var dynamicColumns = [];
        var dynamicColumnsContentWidth = 0;
        var fairWidth = table.width / table.columns.length;
        var staticWidth = 0;
        table.columns.forEach(function (column) {
            var colStyles = extend(defaultStyles, themes[settings.theme].table, settings.styles, column.styles);
            if (colStyles.columnWidth === 'wrap') {
                column.width = column.contentWidth;
            } else if (typeof colStyles.columnWidth === 'number') {
                column.width = colStyles.columnWidth;
            } else if (colStyles.columnWidth === 'auto' || true) {
                if (column.contentWidth <= fairWidth && table.contentWidth > table.width) {
                    column.width = column.contentWidth;
                } else {
                    dynamicColumns.push(column);
                    dynamicColumnsContentWidth += column.contentWidth;
                    column.width = 0;
                }
            }
            staticWidth += column.width;
        });

        // Distributes extra width or trims columns down to fit
        distributeWidth(dynamicColumns, staticWidth, dynamicColumnsContentWidth, fairWidth);

        // Row height, table height and text overflow
        table.height = 0;
        var all = table.rows.concat(table.headerRow);
        all.forEach(function (row, i) {
            var lineBreakCount = 0;
            var cursorX = table.x;
            table.columns.forEach(function (col) {
                var cell = row.cells[col.dataKey];
                col.x = cursorX;
                applyStyles(cell.styles);
                var textSpace = col.width - cell.styles.cellPadding * 2;
                if (cell.styles.overflow === 'linebreak') {
                    // Add one pt to textSpace to fix rounding error
                    cell.text = doc.splitTextToSize(cell.text, textSpace + 1, {fontSize: cell.styles.fontSize});
                } else if (cell.styles.overflow === 'ellipsize') {
                    cell.text = ellipsize(cell.text, textSpace, cell.styles);
                } else if (cell.styles.overflow === 'visible') {
                    // Do nothing
                } else if (cell.styles.overflow === 'hidden') {
                    cell.text = ellipsize(cell.text, textSpace, cell.styles, '');
                } else if (typeof cell.styles.overflow === 'function') {
                    cell.text = cell.styles.overflow(cell.text, textSpace);
                } else {
                    console.error("Unrecognized overflow type: " + cell.styles.overflow);
                }
                var count = Array.isArray(cell.text) ? cell.text.length - 1 : 0;
                if (count > lineBreakCount) {
                    lineBreakCount = count;
                }
                cursorX += col.width;
            });

            row.heightStyle = row.styles.rowHeight;
            // TODO Pick the highest row based on font size as well
            row.height = row.heightStyle + lineBreakCount * row.styles.fontSize * FONT_ROW_RATIO;
            table.height += row.height;
        });
    }

    function distributeWidth(dynamicColumns, staticWidth, dynamicColumnsContentWidth, fairWidth) {
        var extraWidth = table.width - staticWidth - dynamicColumnsContentWidth;
        for (var i = 0; i < dynamicColumns.length; i++) {
            var col = dynamicColumns[i];
            var ratio = col.contentWidth / dynamicColumnsContentWidth;
            // A column turned out to be none dynamic, start over recursively
            var isNoneDynamic = col.contentWidth + extraWidth * ratio < fairWidth;
            if (extraWidth < 0 && isNoneDynamic) {
                dynamicColumns.splice(i, 1);
                dynamicColumnsContentWidth -= col.contentWidth;
                col.width = fairWidth;
                staticWidth += col.width;
                distributeWidth(dynamicColumns, staticWidth, dynamicColumnsContentWidth, fairWidth);
                break;
            } else {
                col.width = col.contentWidth + extraWidth * ratio;
            }
        }
    }

    function printRows() {
        table.rows.forEach(function (row, i) {
            if (isNewPage(row.height)) {
                var samePageThreshold = 3;
                // TODO Fix cell height > pageHeight
                /*if (row.height > row.heightStyle * samePageThreshold) {
                    var remainingPageSpace = doc.internal.pageSize.height - cursor.y - settings.margin.bottom;
                    var lineCount = Math.floor(remainingPageSpace / (row.styles.fontSize * FONT_ROW_RATIO));
                    table.columns.forEach(function(col) {
                        var arr = row.cells[col.dataKey].text;
                        if (arr.length > lineCount) {
                            arr.splice(lineCount - 1, arr.length, "...");
                        }
                    });

                    row.height = remainingPageSpace;
                    if (settings.drawRow(row, hooksData({row: row})) !== false) {
                        printRow(row, settings.drawCell);
                    }
                    row = new Row(rawRow);
                }*/
                addPage();
            }
            row.y = cursor.y;
            if (settings.drawRow(row, hooksData({row: row})) !== false) {
                printRow(row, settings.drawCell);
            }
        });
    }

    function addPage() {
        settings.afterPageContent(hooksData());
        doc.addPage();
        pageCount++;
        cursor = {x: settings.margin.left, y: settings.margin.top};
        settings.beforePageContent(hooksData());
        if (settings.drawHeaderRow(table.headerRow, hooksData({row: table.headerRow})) !== false) {
            printRow(table.headerRow, settings.drawHeaderCell);
        }
    }

    /**
     * Add a new page if cursor is at the end of page
     * @param rowHeight
     * @returns {boolean}
     */
    function isNewPage(rowHeight) {
        var afterRowPos = cursor.y + rowHeight + settings.margin.bottom;
        return afterRowPos >= doc.internal.pageSize.height;
    }

    function printRow(row, hookHandler) {
        for (var i = 0; i < table.columns.length; i++) {
            var column = table.columns[i];
            var cell = row.cells[column.dataKey];
            if(!cell) {
                continue;
            }
            applyStyles(cell.styles);

            cell.x = column.x;
            cell.y = cursor.y;
            cell.height = row.height;
            cell.width = column.width;

            if (cell.styles.valign === 'top') {
                cell.textPos.y = cursor.y + cell.styles.cellPadding;
            } else if (cell.styles.valign === 'bottom') {
                cell.textPos.y = cursor.y + row.height - cell.styles.cellPadding;
            } else {
                cell.textPos.y = cursor.y + row.height / 2;
            }

            if (cell.styles.halign === 'right') {
                cell.textPos.x = cell.x + cell.width - cell.styles.cellPadding;
            } else if (cell.styles.halign === 'center') {
                cell.textPos.x = cell.x + cell.width / 2;
            } else {
                cell.textPos.x = cell.x + cell.styles.cellPadding;
            }

            var data = hooksData({column: column, row: row});
            if (hookHandler(cell, data) !== false) {
                doc.rect(cell.x, cell.y, cell.width, cell.height, cell.styles.fillStyle);
                doc.autoTableText(cell.text, cell.textPos.x, cell.textPos.y, {
                    halign: cell.styles.halign,
                    valign: cell.styles.valign
                });
            }
        }

        cursor.y += row.height;
    }

    function applyStyles(styles) {
        var arr = [
            {func: doc.setFillColor, value: styles.fillColor},
            {func: doc.setTextColor, value: styles.textColor},
            {func: doc.setFontStyle, value: styles.fontStyle},
            {func: doc.setDrawColor, value: styles.lineColor},
            {func: doc.setLineWidth, value: styles.lineWidth},
            {func: doc.setFont, value: styles.font},
            {func: doc.setFontSize, value: styles.fontSize}
        ];
        arr.forEach(function (obj) {
            if (typeof obj.value !== 'undefined') {
                if (obj.value.constructor === Array) {
                    obj.func.apply(this, obj.value);
                } else {
                    obj.func(obj.value);
                }
            }
        });
    }

    function hooksData(additionalData) {
        additionalData = additionalData || {};
        var data = {
            pageCount: pageCount,
            settings: settings,
            table: table,
            cursor: cursor
        };
        for (var prop in additionalData) {
            if (additionalData.hasOwnProperty(prop)) {
                data[prop] = additionalData[prop];
            }
        }
        return data;
    }

    /**
     * Ellipsize the text to fit in the width
     */
    function ellipsize(text, width, styles, ellipsizeStr) {
        ellipsizeStr = typeof  ellipsizeStr !== 'undefined' ? ellipsizeStr : '...';

        if (Array.isArray(text)) {
            text.forEach(function (str, i) {
                text[i] = ellipsize(str, width, styles, ellipsizeStr);
            });
            return text;
        }

        if (width >= getStringWidth(text, styles)) {
            return text;
        }
        while (width < getStringWidth(text + ellipsizeStr, styles)) {
            if (text.length < 2) {
                break;
            }
            text = text.substring(0, text.length - 1);
        }
        return text.trim() + ellipsizeStr;
    }

    function getStringWidth(text, styles) {
        applyStyles(styles);
        var w = doc.getStringUnitWidth(text);
        return w * styles.fontSize;
    }

    function extend(defaults) {
        var extended = {};
        var prop;
        for (prop in defaults) {
            if (defaults.hasOwnProperty(prop)) {
                extended[prop] = defaults[prop];
            }
        }
        for (var i = 1; i < arguments.length; i++) {
            var options = arguments[i];
            for (prop in options) {
                if (options.hasOwnProperty(prop)) {
                    if (typeof options[prop] === 'object' && !Array.isArray(options[prop])) {
                        //extended[prop] = extend(extended[prop] || {}, options[prop])
                        extended[prop] = options[prop];
                    } else {
                        extended[prop] = options[prop];
                    }
                }
            }
        }
        return extended;
    }

})(jsPDF.API);

class Table {
    constructor() {
        this.height = 0;
        this.width = 0;
        this.x = 0;
        this.y = 0;
        this.contentWidth = 0;
        this.rows = [];
        this.columns = [];
        this.headerRow = null;
        this.settings = {};
    }
}

class Row {
    constructor(raw) {
        this.raw = raw || {};
        this.index = 0;
        this.styles = {};
        this.cells = {};
        this.height = 0;
        this.y = 0;
    }
}

class Cell {
    constructor(raw) {
        this.raw = raw;
        this.styles = {};
        this.text = '';
        this.contentWidth = 0;
        this.textPos = {};
        this.height = 0;
        this.width = 0;
        this.x = 0;
        this.y = 0;
    }
}

class Column {
    constructor(dataKey) {
        this.dataKey = dataKey;
        this.options = {};
        this.styles = {};
        this.contentWidth = 0;
        this.width = 0;
        this.x = 0;
    }
}