미디어위키:CategoryNav.js

/* =========================================
COASTLINE: BLACK ICE - CategoryNav
대문 카테고리 SVG 네비 생성기
========================================= */

(function (window, document, mw) {
    'use strict';

    var XLINK_NS = 'http://www.w3.org/1999/xlink';
    var ITEMS = [
        { key:'era', label:'시대', title:'시대' },
        { key:'settings', label:'설정', title:'설정' },
        { key:'project', label:'프로젝트', title:'프로젝트:소개' },
        { key:'corporations', label:'기업 및 공동체', title:'기업_및_공동체' },
        { key:'military', label:'군, 정치집단', title:'군_정치집단' }
    ];
    var BOUNDARY_DIRS = [0, 1, 1, -1, -1, 0];
    var renderTimer = 0;

    function geometryApi() {
        return window.CLBI && window.CLBI.frame;
    }

    function buildPath(title) {
        if (typeof window.buildWikiPath === 'function') return window.buildWikiPath(title);
        return '/index.php/' + encodeURI(String(title || '').replace(/ /g, '_'));
    }

    function clearNode(node) {
        while (node && node.firstChild) node.removeChild(node.firstChild);
    }

    function calculateGeometry(width) {
        var api = geometryApi();
        var frame = api.FRAME;
        var dimensions = api.DIMENSIONS;
        var contentLeft = frame.FRAME_FACE;
        var contentWidth = Math.max(ITEMS.length, width - frame.FRAME_FACE * 2);
        var boundaries = [];
        var segments = [];
        var i;

        for (i = 0; i <= ITEMS.length; i++) {
            boundaries.push(contentLeft + Math.round(contentWidth * i / ITEMS.length));
        }

        for (i = 0; i < ITEMS.length; i++) {
            var leftTopX = boundaries[i] + (i === 0 ? 0 : frame.GAP / 2);
            var rightTopX = boundaries[i + 1] - (i === ITEMS.length - 1 ? 0 : frame.GAP / 2);
            segments.push({
                leftTopX:leftTopX,
                rightTopX:rightTopX,
                leftDir:BOUNDARY_DIRS[i],
                rightDir:BOUNDARY_DIRS[i + 1],
                points:api.segmentAt(
                    leftTopX,
                    rightTopX,
                    dimensions.BUTTON_TOP,
                    dimensions.BUTTON_BOTTOM,
                    BOUNDARY_DIRS[i],
                    BOUNDARY_DIRS[i + 1],
                    0,
                    0,
                    0
                )
            });
        }

        return {
            width:width,
            boundaries:boundaries,
            segments:segments,
            dimensions:dimensions
        };
    }

    function appendFrame(svg, geometry) {
        var api = geometryApi();
        var frame = api.FRAME;
        var d = geometry.dimensions;
        var width = geometry.width;
        var group = api.create('g', 'portal-category-frame');

        group.appendChild(api.rect('portal-category-frame-edge', 0, 0, width, d.ROW_HEIGHT));
        group.appendChild(api.rect('portal-category-frame-surface', 1, 1, width - 2, d.ROW_HEIGHT - 2));
        group.appendChild(api.rect(
            'portal-category-frame-well',
            frame.FRAME_FACE,
            frame.FRAME_FACE,
            width - frame.FRAME_FACE * 2,
            d.ROW_HEIGHT - frame.FRAME_FACE * 2
        ));

        group.appendChild(api.line('portal-category-frame-highlight', [1, 1], [width - 1, 1]));
        group.appendChild(api.line('portal-category-frame-highlight', [width - 1, 1], [width - 1, d.ROW_HEIGHT - 1]));
        group.appendChild(api.line('portal-category-frame-shadow', [1, d.ROW_HEIGHT - 1], [1, 1]));
        group.appendChild(api.line('portal-category-frame-shadow', [width - 1, d.ROW_HEIGHT - 1], [1, d.ROW_HEIGHT - 1]));

        group.appendChild(api.line(
            'portal-category-well-shadow',
            [frame.FRAME_FACE, frame.FRAME_FACE],
            [width - frame.FRAME_FACE, frame.FRAME_FACE]
        ));
        group.appendChild(api.line(
            'portal-category-well-shadow',
            [width - frame.FRAME_FACE, frame.FRAME_FACE],
            [width - frame.FRAME_FACE, d.ROW_HEIGHT - frame.FRAME_FACE]
        ));
        group.appendChild(api.line(
            'portal-category-well-highlight',
            [frame.FRAME_FACE, d.ROW_HEIGHT - frame.FRAME_FACE],
            [frame.FRAME_FACE, frame.FRAME_FACE]
        ));
        group.appendChild(api.line(
            'portal-category-well-highlight',
            [width - frame.FRAME_FACE, d.ROW_HEIGHT - frame.FRAME_FACE],
            [frame.FRAME_FACE, d.ROW_HEIGHT - frame.FRAME_FACE]
        ));
        svg.appendChild(group);
    }

    function createSegment(item, index, geometry) {
        var api = geometryApi();
        var frame = api.FRAME;
        var data = geometry.segments[index];
        var d = geometry.dimensions;
        var anchor = api.create('a', 'portal-cat-anchor');
        var outer = api.polygon('portal-cat-edge', data.points);
        var surfacePoints = api.segmentAt(
            data.leftTopX,
            data.rightTopX,
            d.BUTTON_TOP + frame.BORDER,
            d.BUTTON_BOTTOM - frame.BORDER,
            data.leftDir,
            data.rightDir,
            0,
            frame.BORDER,
            frame.BORDER
        );
        var bevelPoints = api.segmentAt(
            data.leftTopX,
            data.rightTopX,
            d.BUTTON_TOP + frame.BORDER + frame.BEVEL,
            d.BUTTON_BOTTOM - frame.BORDER - frame.BEVEL,
            data.leftDir,
            data.rightDir,
            0,
            frame.BORDER + frame.BEVEL,
            frame.BORDER + frame.BEVEL
        );
        var hit = api.polygon('portal-cat-hit', data.points);
        var text = api.create('text', 'portal-cat-label');
        var href = buildPath(item.title);

        anchor.setAttribute('href', href);
        anchor.setAttributeNS(XLINK_NS, 'xlink:href', href);
        anchor.setAttribute('aria-label', item.label);
        anchor.setAttribute('data-category-key', item.key);

        anchor.appendChild(outer);
        anchor.appendChild(api.polygon('portal-cat-surface', surfacePoints));
        anchor.appendChild(api.line('portal-cat-inset portal-cat-inset-top', bevelPoints[0], bevelPoints[1]));
        anchor.appendChild(api.line('portal-cat-inset portal-cat-inset-right', bevelPoints[1], bevelPoints[2]));
        anchor.appendChild(api.line('portal-cat-inset portal-cat-inset-bottom', bevelPoints[2], bevelPoints[3]));
        anchor.appendChild(api.line('portal-cat-inset portal-cat-inset-left', bevelPoints[3], bevelPoints[0]));
        hit.setAttribute('pointer-events', 'all');
        anchor.appendChild(hit);

        text.setAttribute('x', api.centerX(surfacePoints));
        text.setAttribute('y', Math.round((d.BUTTON_TOP + d.BUTTON_BOTTOM) / 2) + 1);
        text.setAttribute('font-size', '12');
        text.setAttribute('font-weight', '700');
        text.setAttribute('text-anchor', 'middle');
        text.setAttribute('dominant-baseline', 'middle');
        text.setAttribute('pointer-events', 'none');
        text.textContent = item.label;
        anchor.appendChild(text);
        return anchor;
    }

    function publishSeams(geometry) {
        var api = geometryApi();
        var segments = geometry.segments;
        var d = geometry.dimensions;

        api.setSeams({
            width:geometry.width,
            rowHeight:d.ROW_HEIGHT,
            buttonTop:d.BUTTON_TOP,
            buttonBottom:d.BUTTON_BOTTOM,
            overlap:d.OVERLAP,
            bottomStartAbsY:d.BOTTOM_START_ABS_Y,
            settingsLeftTopX:segments[1].leftTopX,
            settingsLeftDir:segments[1].leftDir,
            corpRightTopX:segments[3].rightTopX,
            corpRightDir:segments[3].rightDir,
            projectLeftTopX:segments[2].leftTopX,
            projectLeftDir:segments[2].leftDir,
            projectRightTopX:segments[2].rightTopX,
            projectRightDir:segments[2].rightDir
        });
    }

    function buildSvg(width) {
        var api = geometryApi();
        var geometry = calculateGeometry(width);
        var svg = api.create('svg', 'portal-category-svg');

        svg.setAttribute('viewBox', '0 0 ' + geometry.width + ' ' + geometry.dimensions.ROW_HEIGHT);
        svg.setAttribute('width', '100%');
        svg.setAttribute('height', geometry.dimensions.ROW_HEIGHT);
        svg.setAttribute('preserveAspectRatio', 'none');
        svg.setAttribute('aria-hidden', 'false');
        svg.setAttribute('data-frame-width', geometry.width);

        appendFrame(svg, geometry);
        ITEMS.forEach(function (item, index) {
            svg.appendChild(createSegment(item, index, geometry));
        });

        return { svg:svg, geometry:geometry };
    }

    function renderMount(mount) {
        var api = geometryApi();
        var width;
        var nav;
        var result;

        if (!mount || !api) return false;
        width = api.readWidth(mount);
        if (!width) {
            if (!mount.__categoryNavRetry) {
                mount.__categoryNavRetry = window.setTimeout(function () {
                    mount.__categoryNavRetry = 0;
                    renderMount(mount);
                }, 60);
            }
            return false;
        }

        if (mount.__categoryNavRetry) {
            window.clearTimeout(mount.__categoryNavRetry);
            mount.__categoryNavRetry = 0;
        }
        nav = mount.querySelector('.portal-category-nav');
        if (!nav) {
            clearNode(mount);
            nav = document.createElement('nav');
            nav.className = 'portal-category-nav';
            nav.setAttribute('aria-label', 'Main categories');
            mount.appendChild(nav);
        }

        if (nav.__frameWidth === width && nav.querySelector('.portal-category-svg')) {
            publishSeams(calculateGeometry(width));
            return true;
        }

        result = buildSvg(width);
        nav.__frameWidth = width;
        clearNode(nav);
        nav.appendChild(result.svg);
        mount.setAttribute('data-category-nav-rendered', '1');
        publishSeams(result.geometry);

        if (window.ResizeObserver && !mount.__categoryNavObserver) {
            mount.__categoryNavObserver = new window.ResizeObserver(function () {
                schedule(mount);
            });
            mount.__categoryNavObserver.observe(mount);
        }
        return true;
    }

    function renderAll(root) {
        var scope = root && root.querySelectorAll ? root : document;
        var mounts = [];
        var rendered = 0;

        if (scope.matches && scope.matches('[data-component="category-nav"]')) mounts.push(scope);
        Array.prototype.forEach.call(scope.querySelectorAll('[data-component="category-nav"]'), function (mount) {
            if (mounts.indexOf(mount) === -1) mounts.push(mount);
        });
        mounts.forEach(function (mount) {
            if (renderMount(mount)) rendered += 1;
        });
        return rendered;
    }

    function schedule(root) {
        window.clearTimeout(renderTimer);
        renderTimer = window.setTimeout(function () {
            renderTimer = 0;
            renderAll(root || document);
        }, 0);
    }

    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', function () { renderAll(document); });
    } else {
        renderAll(document);
    }

    if (mw && mw.hook) {
        mw.hook('wikipage.content').add(function (content) {
            schedule(content && content[0] ? content[0] : document);
        });
    }

    window.addEventListener('resize', function () { schedule(document); });

    window.CategoryNav = {
        init:renderAll,
        renderAll:renderAll,
        renderMount:renderMount
    };
    window.CLBI = window.CLBI || {};
    window.CLBI.categoryNav = {
        init:renderAll,
        renderMount:renderMount
    };
}(window, document, window.mw));