«ميدياويكي:Common.js»: الفرق بين المراجعتين

/* الجافاسكريبت الموضوع هنا سيتم تحميله لكل المستخدمين مع كل تحميل للصفحة. */
 
// =============================================================================
// Formate a poem
// 2024-02-27: Created by Abdalla G. M. Ahmed
// =============================================================================
 
// -----------------------------------------------------------------------------
// Measure displayed width of an HTML text
// -----------------------------------------------------------------------------
 
function measureTextWidth(text, font) {
    var tmpSpan = document.createElement("span");
    tmpSpan.style.font = font;                                                  // Apply the font style
    tmpSpan.style.position = "absolute";
    tmpSpan.style.visibility = "hidden";
    tmpSpan.style.whiteSpace = "nowrap";
    tmpSpan.innerHTML = text;
 
    document.body.appendChild(tmpSpan);
    var textWidth = tmpSpan.offsetWidth;
    document.body.removeChild(tmpSpan);
 
    return textWidth;
}
 
// -----------------------------------------------------------------------------
// Retrieve font specs of an element
// -----------------------------------------------------------------------------
 
function getFontStyle(node) {
    var computedStyle = window.getComputedStyle(node);
    var fontSize = computedStyle.fontSize;
    var fontFamily = computedStyle.fontFamily;
    var fontWeight = computedStyle.fontWeight;
    var fontStyle = computedStyle.fontStyle;
    var fontVariant = computedStyle.fontVariant;
    return (
        fontStyle + " " + fontVariant + " " +
        fontWeight + " " + fontSize + " " + fontFamily
    );
}
 
// -----------------------------------------------------------------------------
// Trim empty leading and trailing entries of an array
// -----------------------------------------------------------------------------
 
function arrayTrim(arr) {
    var result = arr.slice();                                                   // Clone the array to avoid modifying the original array
    while (result.length > 0 && !result[0]) { result.shift(); }                 // Remove empty elements from the beginning
    while (result.length > 0 && !result[result.length - 1]) { result.pop(); }   // Remove empty elements from the end
    return result;
}
 
// -----------------------------------------------------------------------------
// Format contents of a container (e.g., div) as a poem
// -----------------------------------------------------------------------------
 
function poemFormat(poem) {
    var bWidth = parseFloat(poem.getAttribute('data-bWidth') || 0);             // Overall with of beit
    var bGap = parseFloat(poem.getAttribute('data-bGap') || 50);
    var pWidth = [0, 0, 0, 0, 0];                                               // Widths of part for different number of parts, index 0 is used for centered verses
    var nGaps  = [2, 0, 1, 2, 3];                                               // Number of gaps for different number of parts, initially assuming no leading gaps
    var fontStyle = getFontStyle(poem);
    var lines = (
        poem
        .innerHTML                                                              // We get the HTML to retain some tags like <a,i,b>
        .replace(/\s*(<p[^>]*>|<div[^>]*>|<pre[^>]*>)/gi, '')                   // Remove whitespace before opening container tags and the tags
        .replace(/<\/p>|<\/div>|<\/pre>/gi, '')                                 // Remove closing tags
        .replace(/\s*<hr[^>]*>\s*/gi, '\n----\n')
        .split('\n')                                                            // Break into lines, assuming one beit per line
    );
    lines = arrayTrim(lines);                                                   // Remove leading and trailing empty lines so that the enclosing <div> tag may be placed in separate lines
    var formattedLines = [];
    var tagPlaceholder = '<a><i></i></a>';                                      // Unlikely to be present and does not affect text size
    var tags = [];                                                              // To store extracted tags
    for (var i = 0; i < lines.length; i++) {
        var line = lines[i];
        var leadingSpace = (
            /^ {2,}/.test(line) ?                                               // Starts with two or more spaces?
            '<span class="bGap" style="width:'+bGap+'px">  </span>' :           // Will be placed at the being
            ''                                                                  // Default to none
        );
        line = line.trim();                                                     // Remove leading and trailing spaces
        if (line === "" || /<br>/.test(line)) {                                 // Empty line
            formattedLines.push('<br>');                                        // is replaced by a line break
            continue;                                                           // Done with this line
        }
        if (line === "----") {                                                  // Separator line
            formattedLines.push('<hr style="width:%bWidth%px">');
            continue;                                                           // Done with this line
        }
        if (/^!/.test(line)) {                                                  // A line starting with an exclamation mark is a comment
            formattedLines.push(
                '<p class="bComment" style="width:%cWidth%px">'                 // "cWidth" is a placeholder until line widths are computed
                + line.substring(1) +                                           // Remove the exclamation mark
                '</p>'
            );
            continue;                                                           // Done with this line
        }
        var closingHalf = false;
        /*if (line.startsWith('..') && line.endsWith('..')) {                     // Lines delimited by two dots are treated as closing halves.
            line = line.substring(2, line.length - 2).trim();                   // Remove delimiters and any white space
            line = '*  ' + line.replace(/(\s+)/g, ' ');                         // Insert a minimal-width dummy half, and remove gaps, if any, to process as two halves
            closingHalf = true;
        }*/
        if (line.startsWith('.') && line.endsWith('.')) {                       // Lines delimited by dots are centered.
            line = line.substring(1, line.length - 1).trim();                   // Remove delimiters and any white space
            pWidth[0] = Math.max(pWidth[0], measureTextWidth(line));
            formattedLines.push(
                '<p class="bMid" style="width:%bWidth%px">' + line + '</p>'
            );
            continue;                                                           // Done with this line
        }
        // ---------------------------------------------------------------------
        // From here we assume a regular classic column poem
        // ---------------------------------------------------------------------
        // ---------------------------------------------------------------------
        // Distribute tags over words so that they can be split into parts,
        // then save tags and replace them with no-space placeholders
        // ---------------------------------------------------------------------
        line = line.replace(
            /(<([abi]+)(?:\s[^>]*)?>)(.*?)<\/\2>/gi,                            // Match the <a/i/b> tags and capture parameters into positional variables
            function(match, openingTag, tagName, content) {                     // Compute replacements based on captured parameters
                return content                                                  // Content inside tag
                .split(/(\s+)/)                                                 // Split at white space and include white spaces in the list
                .map(function(item) {
                    if (/\S/.test(item)) {                                      // If an item is non-white space
                        tags.push(openingTag, '</' + tagName + '>');            // Save opening and closing tags
                        item = tagPlaceholder + item + tagPlaceholder;          // Enclose text item in a dummy tag placeholder
                    }
                    return item;                                                // Whitespace is returned as is
                }).join('');                                                    // Join all items back together
            }
        );
        // ---------------------------------------------------------
        // Extract trailing symbols to align at "قافية"
        // ---------------------------------------------------------
        var trailingSymbols = '';                                               // Default to none
        line = line.replace(
            /^(.*?[\u0620-\u064Aa-zA-Z])([^\u0620-\u064Aa-zA-Z]*)$/,            // Match trailing non-letter symbols and capture parameters
            function(match, alphabeticPart, nonAlphabeticPart) {                // A function to handle parameters
                if (match.endsWith(tagPlaceholder)) return match;               // Too complex to handle, may consider later
                trailingSymbols = (                                             // Extract trailing symbols, if any
                    '<span class="bTrailingSymbols">'                           // Enclose in a span element to enable separate formatting, if desirable
                    + nonAlphabeticPart +
                    '</span>'
                );
                return alphabeticPart;                                          // Return alphabetic part to replace the original line
            }
        );
        // ---------------------------------------------------------------------
        // Split parts
        // ---------------------------------------------------------------------
        var nParts = 0;                                                         // Number of parts
        var partWidth = 0;                                                      // Maximum part length
        var parts = (
            line
            .split(/(\s{2,})/)                                                  // Split at two or more spaces and include white spaces in the list
            .map(function(item) {
                if (/\S/.test(item)) {                                          // An item containing non-space contents is treated as a part
                    nParts++;                                                   // Increment number of parts to count this one
                    // ---------------------------------------------------------
                    // Enclose words in spans to enable justification
                    // ---------------------------------------------------------
                    item = (
                        item
                        .split(/(\s+)/)                                         // Split at white space and include white spaces in the list
                        .map(function(item) {
                            if (
                                /\S/.test(item)
                                && !item.startsWith(tagPlaceholder)
                            ) {                                                 // If an item is non-white space and not already in a tag
                                return '<span>' + item + '</span>';             // Enclose in a span to enable justification
                            }
                            return item;                                        // Return whitespace and tagged items as is
                        })
                        .join('')                                               // Join all items back together
                    );
                    // ---------------------------------------------------------
                    partWidth = Math.max(
                        partWidth, measureTextWidth(item, fontStyle)            // Update longest part length
                    );
                    return (
                        '<span class="bJustified" style="width:%pWidth%px">'
                        + item +
                        '</span>'
                    );
                }
                else {                                                          // White space separating parts
                    return '<span class="bGap">  </span>';                      // Enclose in a span, typically stylized to preserve spaces
                }
            })
        );
        //if (closingHalf) { parts.shift(); }                                     // Dispense with dummy
        line = parts.join('').replace(/%pWidth%/g, '%pWidth' + nParts + '%');   // The number of parts is known now
        pWidth[nParts] = Math.max(pWidth[nParts], partWidth);
        /*if (closingHalf) {
            formattedLines.push(
                '<p class="bMid" style="width:%bWidth%px">'
                + line +
                '</p>'
            );
        }*/
        //else {
            formattedLines.push(
                '<p class="beit">'
                + leadingSpace
                + '<span class="bJustified" style="width:%bWidth%px">'
                + line
                + '</span>'
                + trailingSymbols
                + '</p>'
            );
        //}
    }
    for (var i = 0; i < pWidth.length; i++) {
        var bWidth_i = pWidth[i] ? pWidth[i] * i + nGaps[i] * bGap : 0;         // Width to accommodate this number/width of parts
        bWidth = Math.max(bWidth, bWidth_i);                                    // Accommodate the widest
    }
    pWidth = pWidth.map(function(w, i) {
        return (bWidth - nGaps[i] * bGap) / (i ? i : 1);
    });
    var tagIndex = 0;                                                           // To track the current tag being replaced
    return (
        formattedLines
        .join('')                                                               // Concatenate
        .replace(new RegExp(tagPlaceholder, "g"), function() {                  // Restore saved tags
            return tags[tagIndex++];
        })
        .replace(/%pWidth(\d+)%/g, function(match, i) {                         // Replace computed part widths
            return pWidth[i].toFixed(1);
        })
        .replace(/%bWidth%/g, bWidth)                                           // Replace computed overall beit width
        .replace(/%cWidth%/g, (0.9 * bWidth).toFixed(1))                        // Replace width of comments
    );
}
 
$(function () {
    document.querySelectorAll('.abyat').forEach(function(poem) {
        poem.innerHTML = poemFormat(poem);
    });
 
    var toggler = document.getElementsByClassName("treeBranch");
    var i;
 
    for (i = 0; i < toggler.length; i++) {
        toggler[i].addEventListener("click", function() {
            this.parentElement.querySelector(".treeBranch-nested").classList.toggle("treeBranch-active");
            this.classList.toggle("treeBranch-down");
        });
    }
}());