vue-files-preview-inno/es/node_modules/epubjs/src/spine.mjs.map

A tool for previewing files such as doc, excel, pdf, image, markdown, txt, audio, and video and so on.

{"version":3,"file":"spine.mjs","sources":["../../../../../node_modules/epubjs/src/spine.js"],"sourcesContent":["import EpubCFI from \"./epubcfi\";\nimport Hook from \"./utils/hook\";\nimport Section from \"./section\";\nimport {replaceBase, replaceCanonical, replaceMeta} from \"./utils/replacements\";\n\n/**\n * A collection of Spine Items\n */\nclass Spine {\n\tconstructor() {\n\t\tthis.spineItems = [];\n\t\tthis.spineByHref = {};\n\t\tthis.spineById = {};\n\n\t\tthis.hooks = {};\n\t\tthis.hooks.serialize = new Hook();\n\t\tthis.hooks.content = new Hook();\n\n\t\t// Register replacements\n\t\tthis.hooks.content.register(replaceBase);\n\t\tthis.hooks.content.register(replaceCanonical);\n\t\tthis.hooks.content.register(replaceMeta);\n\n\t\tthis.epubcfi = new EpubCFI();\n\n\t\tthis.loaded = false;\n\n\t\tthis.items = undefined;\n\t\tthis.manifest = undefined;\n\t\tthis.spineNodeIndex = undefined;\n\t\tthis.baseUrl = undefined;\n\t\tthis.length = undefined;\n\t}\n\n\t/**\n\t * Unpack items from a opf into spine items\n\t * @param  {Packaging} _package\n\t * @param  {method} resolver URL resolver\n\t * @param  {method} canonical Resolve canonical url\n\t */\n\tunpack(_package, resolver, canonical) {\n\n\t\tthis.items = _package.spine;\n\t\tthis.manifest = _package.manifest;\n\t\tthis.spineNodeIndex = _package.spineNodeIndex;\n\t\tthis.baseUrl = _package.baseUrl || _package.basePath || \"\";\n\t\tthis.length = this.items.length;\n\n\t\tthis.items.forEach( (item, index) => {\n\t\t\tvar manifestItem = this.manifest[item.idref];\n\t\t\tvar spineItem;\n\n\t\t\titem.index = index;\n\t\t\titem.cfiBase = this.epubcfi.generateChapterComponent(this.spineNodeIndex, item.index, item.id);\n\n\t\t\tif (item.href) {\n\t\t\t\titem.url = resolver(item.href, true);\n\t\t\t\titem.canonical = canonical(item.href);\n\t\t\t}\n\n\t\t\tif(manifestItem) {\n\t\t\t\titem.href = manifestItem.href;\n\t\t\t\titem.url = resolver(item.href, true);\n\t\t\t\titem.canonical = canonical(item.href);\n\n\t\t\t\tif(manifestItem.properties.length){\n\t\t\t\t\titem.properties.push.apply(item.properties, manifestItem.properties);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif (item.linear === \"yes\") {\n\t\t\t\titem.prev = function() {\n\t\t\t\t\tlet prevIndex = item.index;\n\t\t\t\t\twhile (prevIndex > 0) {\n\t\t\t\t\t\tlet prev = this.get(prevIndex-1);\n\t\t\t\t\t\tif (prev && prev.linear) {\n\t\t\t\t\t\t\treturn prev;\n\t\t\t\t\t\t}\n\t\t\t\t\t\tprevIndex -= 1;\n\t\t\t\t\t}\n\t\t\t\t\treturn;\n\t\t\t\t}.bind(this);\n\t\t\t\titem.next = function() {\n\t\t\t\t\tlet nextIndex = item.index;\n\t\t\t\t\twhile (nextIndex < this.spineItems.length-1) {\n\t\t\t\t\t\tlet next = this.get(nextIndex+1);\n\t\t\t\t\t\tif (next && next.linear) {\n\t\t\t\t\t\t\treturn next;\n\t\t\t\t\t\t}\n\t\t\t\t\t\tnextIndex += 1;\n\t\t\t\t\t}\n\t\t\t\t\treturn;\n\t\t\t\t}.bind(this);\n\t\t\t} else {\n\t\t\t\titem.prev = function() {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t\titem.next = function() {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t}\n\n\n\t\t\tspineItem = new Section(item, this.hooks);\n\n\t\t\tthis.append(spineItem);\n\n\n\t\t});\n\n\t\tthis.loaded = true;\n\t}\n\n\t/**\n\t * Get an item from the spine\n\t * @param  {string|number} [target]\n\t * @return {Section} section\n\t * @example spine.get();\n\t * @example spine.get(1);\n\t * @example spine.get(\"chap1.html\");\n\t * @example spine.get(\"#id1234\");\n\t */\n\tget(target) {\n\t\tvar index = 0;\n\n\t\tif (typeof target === \"undefined\") {\n\t\t\twhile (index < this.spineItems.length) {\n\t\t\t\tlet next = this.spineItems[index];\n\t\t\t\tif (next && next.linear) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t\tindex += 1;\n\t\t\t}\n\t\t} else if(this.epubcfi.isCfiString(target)) {\n\t\t\tlet cfi = new EpubCFI(target);\n\t\t\tindex = cfi.spinePos;\n\t\t} else if(typeof target === \"number\" || isNaN(target) === false){\n\t\t\tindex = target;\n\t\t} else if(typeof target === \"string\" && target.indexOf(\"#\") === 0) 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{\n\t\t// var index = this.spineItems.unshift(section);\n\t\tthis.spineByHref[section.href] = 0;\n\t\tthis.spineById[section.idref] = 0;\n\n\t\t// Re-index\n\t\tthis.spineItems.forEach(function(item, index){\n\t\t\titem.index = index;\n\t\t});\n\n\t\treturn 0;\n\t}\n\n\t// insert(section, index) {\n\t//\n\t// };\n\n\t/**\n\t * Remove a Section from the Spine\n\t * @private\n\t * @param  {Section} section\n\t */\n\tremove(section) {\n\t\tvar index = this.spineItems.indexOf(section);\n\n\t\tif(index > -1) {\n\t\t\tdelete this.spineByHref[section.href];\n\t\t\tdelete this.spineById[section.idref];\n\n\t\t\treturn this.spineItems.splice(index, 1);\n\t\t}\n\t}\n\n\t/**\n\t * Loop over the Sections in the Spine\n\t * @return {method} forEach\n\t */\n\teach() {\n\t\treturn this.spineItems.forEach.apply(this.spineItems, arguments);\n\t}\n\n\t/**\n\t * Find the first Section in the Spine\n\t * @return {Section} first section\n\t */\n\tfirst() {\n\t\tlet index = 0;\n\n\t\tdo {\n\t\t\tlet next = this.get(index);\n\n\t\t\tif (next && next.linear) {\n\t\t\t\treturn next;\n\t\t\t}\n\t\t\tindex += 1;\n\t\t} while (index < this.spineItems.length) ;\n\t}\n\n\t/**\n\t * Find the last Section in the Spine\n\t * @return {Section} last section\n\t */\n\tlast() {\n\t\tlet index = this.spineItems.length-1;\n\n\t\tdo {\n\t\t\tlet prev = this.get(index);\n\t\t\tif (prev && prev.linear) {\n\t\t\t\treturn prev;\n\t\t\t}\n\t\t\tindex -= 1;\n\t\t} while (index >= 0);\n\t}\n\n\tdestroy() {\n\t\tthis.each((section) => section.destroy());\n\n\t\tthis.spineItems = undefined\n\t\tthis.spineByHref = undefined\n\t\tthis.spineById = undefined\n\n\t\tthis.hooks.serialize.clear();\n\t\tthis.hooks.content.clear();\n\t\tthis.hooks = undefined;\n\n\t\tthis.epubcfi = undefined;\n\n\t\tthis.loaded = false;\n\n\t\tthis.items = undefined;\n\t\tthis.manifest = undefined;\n\t\tthis.spineNodeIndex = undefined;\n\t\tthis.baseUrl = undefined;\n\t\tthis.length = undefined;\n\t}\n}\n\nexport default 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