File size: 14,548 Bytes
2c1d035 b01d918 2c1d035 b01d918 2c1d035 b01d918 2c1d035 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 | export function createReaderFormatController(readerContext) {
function disposeFormatResources(mode) {
if (mode === "epub-chapters") {
readerContext.chapterManifestCleanup?.();
readerContext.chapterManifestCleanup = null;
}
if (mode === "swf") {
readerContext.swfPlayer?.remove();
readerContext.swfPlayer = null;
}
if (["pdf", "pdf-pages", "image-pages"].includes(mode)) {
readerContext.pdfDocument = null;
readerContext.pdfHybridUrl = "";
readerContext.pdfHybridDocumentPromise = null;
readerContext.pdfHybridSearchUnavailable = false;
readerContext.pdfPageManifest = null;
readerContext.pdfOcrManifest = null;
readerContext.pdfOcrManifestPromise = null;
readerContext.pdfV3Repository?.dispose(); readerContext.pdfTextLayerRepository?.dispose();
for (const shell of readerContext.pdfManifestShells) shell?._v3PreviewRelease?.();
readerContext.pdfV3Repository = readerContext.pdfTextLayerRepository = null;
readerContext.pdfV3Manifest = readerContext.pdfV3Map = null;
readerContext.pdfTextContentCache.clear();
readerContext.pdfTextContentPromises.clear();
readerContext.pdfTextContentCacheBytes = 0;
readerContext.pdfOcrPageCache.clear();
readerContext.pdfOcrPageCacheBytes = 0;
readerContext.clearPdfManifestPrefetches();
readerContext.pdfBookSearchClient?.dispose();
readerContext.pdfBookSearchClient = null;
readerContext.pdfShellWindow?.dispose();
readerContext.pdfFirstPagePreload?.removeAttribute("src");
readerContext.pdfFirstPagePreload = null;
for (const canvas of readerContext.content.querySelectorAll(".reader-page canvas")) {
canvas.width = 0;
canvas.height = 0;
}
for (const image of readerContext.content.querySelectorAll(".reader-page img")) image.removeAttribute("src");
}
if (mode === "foliate") {
readerContext.foliateSectionObserver?.disconnect();
readerContext.foliateSectionObserver = null;
readerContext.foliateSectionVirtualizer?.dispose();
readerContext.foliateChapterRepository?.dispose();
readerContext.foliateSectionVirtualizer = null;
readerContext.foliateChapterRepository = null;
readerContext.foliateSectionLoader = null;
readerContext.foliateSectionSettler = null;
try {
const closing = readerContext.epubRendition?.close?.();
closing?.catch?.(() => {});
} catch (_) {}
readerContext.epubRendition = null;
readerContext.epubBook = null;
}
if (mode === "html") {
readerContext.htmlFrame?.remove();
readerContext.htmlFrame = null;
readerContext.content.classList.remove("reader-content--spreadsheet");
}
if (["audio", "video"].includes(mode) && readerContext.mediaElement) {
readerContext.mediaElement.pause();
readerContext.mediaElement.removeAttribute("src");
readerContext.mediaElement.load();
readerContext.mediaElement = null;
}
}
function registerReaderFormatAdapters() {
const formats = {
"pdf-pages": [
() => {
return readerContext.fetchReaderResponse();
},
readerContext.renderPdfPages
],
"image-pages": [
() => readerContext.fetchReaderResponse(),
readerContext.renderImagePages
],
pdf: [readerContext.loadPdfDocument, readerContext.renderPdf],
image: [readerContext.loadImageDocument, readerContext.renderImageDocument],
text: [readerContext.loadTextDocument, readerContext.renderTextDocument],
markdown: [readerContext.loadMarkdownDocument, readerContext.renderMarkdownDocument],
html: [readerContext.loadHtmlDocument, readerContext.renderHtml],
"epub-chapters": [readerContext.loadChapterManifestDocument, readerContext.renderChapterManifest],
audio: [readerContext.loadMediaDocument, () => readerContext.renderMedia("audio")],
video: [readerContext.loadMediaDocument, () => readerContext.renderMedia("video")],
swf: [readerContext.loadSwfDocument, readerContext.renderSwf],
foliate: [readerContext.loadMediaDocument, readerContext.renderFoliate]
};
for (const [mode, [open, render]] of Object.entries(formats))
readerContext.formatAdapters.register(mode, {
open,
render,
restore: (entry, generation) => readerContext.restoreFormat(mode, entry, generation),
dispose: () => readerContext.disposeFormatResources(mode)
});
}
async function resolveReaderSource() {
if (!readerContext.readerId || readerContext.sourceUrl) return;
readerContext.setReaderStage("resolve");
let resolved = readerContext.cachedReaderData;
if (!resolved?.url) {
try {
resolved = await readerContext.resolveReaderId(readerContext.readerId);
} catch (error) {
readerContext.assertReaderActive();
if (!readerContext.localReaderData?.url) throw error;
resolved = readerContext.localReaderData;
}
}
readerContext.assertReaderActive();
readerContext.sourceUrl = readerContext.normalizeSourceUrl(resolved.url || "");
readerContext.contentUrl = readerContext.readerContentUrl(readerContext.sourceUrl);
readerContext.downloadUrl = resolved.download || readerContext.sourceUrl;
readerContext.chapterManifestUrl = resolved.chapter_manifest || "";
readerContext.fallbackUrl = resolved.fallback || "";
if (resolved.extension) readerContext.extension = String(resolved.extension).toLowerCase();
if (
readerContext.extension === "pdf" &&
readerContext.sourceUrl.includes("/api/reader-bucket-resource?") &&
new URL(readerContext.sourceUrl).searchParams.get("path")?.endsWith("page-manifest.json")
)
readerContext.extension = "pdf-pages";
readerContext.capability = readerContext.readerRuntime.negotiate(VoiceOfMLReader.capability(readerContext.extension));
if (readerContext.capability.mode !== "pdf" && !readerContext.pdfPrimarySource()) readerContext.releasePdfWorker?.();
readerContext.readerRuntime.update("source", {
url: readerContext.sourceUrl,
contentUrl: readerContext.contentUrl,
downloadUrl: readerContext.downloadUrl,
extension: readerContext.extension,
metadata: resolved
});
readerContext.applyReaderMetadata(resolved);
}
async function start() {
const generation = readerContext.readerRuntime.currentGeneration("navigation");
// A PDF link already tells us which engine is needed. Start its import while
// an ID-only Reader link is resolving its source URL. The promise is reused
// by loadPdfDocument, so this does not create a second module request.
if (readerContext.extension === "pdf" || /\.pdf(?:$|[?#])/i.test(readerContext.sourceUrl)) readerContext.preloadPdfEngine().catch(() => {});
readerContext.readerSourcePromise = readerContext.measurePdf(readerContext.resolveReaderSource(), "resolve");
await readerContext.readerSourcePromise;
readerContext.assertReaderActive();
if (readerContext.readerId && /\/calibre-chm-epub-[^/]+\/document\.epub(?:$|\?)/i.test(readerContext.sourceUrl)) {
readerContext.extension = "epub";
readerContext.readerRuntime.update("source", { extension: readerContext.extension });
readerContext.capability = readerContext.readerRuntime.negotiate(VoiceOfMLReader.capability(readerContext.extension));
readerContext.content.dataset.mode = readerContext.capability.mode;
document.querySelector(".page-controls").hidden = true;
}
readerContext.syncCapabilityControls();
readerContext.downloadButton.href = readerContext.readerDownloadUrl(readerContext.documentState.title, readerContext.downloadUrl);
if (
(!readerContext.validSource(readerContext.sourceUrl) && !readerContext.validSource(readerContext.chapterManifestUrl) && !readerContext.readerId) ||
readerContext.capability.readerMode === VoiceOfMLReader.ReaderMode.UNSUPPORTED
)
return readerContext.fail("此文件暂不支持在线阅读，请下载原文件。", "READER_UNSUPPORTED");
readerContext.formatAdapters.activate(readerContext.capability.mode);
readerContext.applyReaderMetadata(readerContext.resolvedReaderData);
if (readerContext.validOcr(readerContext.ocrUrl)) {
const ocr = document.querySelector("#ocr") || document.createElement("a");
ocr.id = "ocr";
ocr.className = "text-button";
ocr.target = "_blank";
ocr.rel = "noopener noreferrer";
ocr.textContent = "OCR";
if (!ocr.parentElement) document.querySelector(".reader-actions")?.prepend(ocr);
ocr.href = readerContext.ocrUrl;
ocr.hidden = false;
}
try {
if (readerContext.capability.mode === "foliate") {
readerContext.setReaderStage("foliate");
readerContext.foliateContinuous = true;
const restorationPromise = readerContext.loadReaderRestoration();
readerContext.readerRestorationPromise = restorationPromise;
await readerContext.awaitReader(readerContext.renderFoliate());
readerContext.assertReaderActive();
const restored = await readerContext.awaitReader(restorationPromise);
await readerContext.applyInitialRestoration(restored, generation);
readerContext.initialReaderTargetSection = null;
readerContext.assertReaderActive();
if (!readerContext.setReaderPhase("ready")) return;
readerContext.updateDocumentState({ restorationReady: !readerContext.restorationFailed });
readerContext.scheduleSave();
return;
}
readerContext.setReaderStage("prepare");
const restorationPromise = readerContext.loadReaderRestoration();
readerContext.readerRestorationPromise = restorationPromise;
const prepareResources = new Set(readerContext.readerResources);
try {
const prepared = await readerContext.awaitReader(readerContext.formatAdapters.active.open());
readerContext.assertReaderActive();
await readerContext.formatAdapters.active.render(prepared);
} catch (error) {
readerContext.assertReaderActive();
const originalExtension = String(readerContext.resolvedReaderData?.original_extension || "").toLowerCase();
if (readerContext.capability.mode !== "image-pages" || !readerContext.validSource(readerContext.downloadUrl) ||
!["jpg", "jpeg", "png", "gif", "bmp", "webp"].includes(originalExtension)) throw error;
for (const cleanup of [...readerContext.readerResources]) {
if (prepareResources.has(cleanup)) continue;
cleanup();
readerContext.readerResources.delete(cleanup);
}
readerContext.formatAdapters.dispose();
readerContext.content.replaceChildren();
readerContext.extension = originalExtension;
readerContext.capability = readerContext.readerRuntime.negotiate(VoiceOfMLReader.capability(readerContext.extension));
readerContext.readerRuntime.update("source", { extension: readerContext.extension });
readerContext.updateDocumentState({ page: 1, pageCount: 0 });
readerContext.formatAdapters.activate(readerContext.capability.mode);
readerContext.syncCapabilityControls();
await readerContext.renderImageDocument(await readerContext.loadImageDocument(readerContext.downloadUrl));
}
readerContext.assertReaderActive();
readerContext.markReaderContentReady();
const restored = await readerContext.awaitReader(restorationPromise);
await readerContext.applyInitialRestoration(restored, generation);
readerContext.assertReaderActive();
if (!readerContext.setReaderPhase("ready")) return;
readerContext.updateDocumentState({ restorationReady: !readerContext.restorationFailed });
readerContext.schedulePdfBookSearchPrefetch();
readerContext.updateProgressTools();
if (readerContext.fullSearchInput.value.trim()) readerContext.runFullSearch();
readerContext.scheduleSave();
} catch (error) {
if (readerContext.readerAbortController.signal.aborted || error?.name === "AbortError") return;
console.error(error);
if (
error?.code !== "READER_RESTORE" &&
readerContext.capability.mode === "epub-chapters" &&
readerContext.validFallback(readerContext.fallbackUrl)
) {
const target = new URL(location.href);
target.searchParams.set("url", readerContext.fallbackUrl);
target.searchParams.set("ext", "pdf");
target.searchParams.delete("chapter_manifest");
target.searchParams.delete("fallback");
if (readerContext.isReaderOverlayFrame())
window.parent.postMessage({ type: "voice-reader-open", url: target.href }, location.origin);
else location.replace(target.href);
return;
}
readerContext.fail(
error && error.message ? error.message : "原文件加载失败",
readerContext.classifyReaderError(error, readerContext.capability.mode === "foliate" ? "READER_CORRUPT" : "READER_PARSE")
);
}
}
function syncCapabilityControls() {
readerContext.content.dataset.mode = readerContext.capability.mode || "unsupported";
readerContext.pageInvertToggle.hidden = !["pdf", "pdf-pages"].includes(readerContext.capability.mode);
document.querySelector(".page-controls").hidden = !readerContext.capability.features.pagination;
document.querySelector(".zoom-controls").hidden = !readerContext.capability.features.zoom;
readerContext.mediaTab.hidden = !readerContext.capability.features.media;
readerContext.fullSearchButton.hidden = !readerContext.capability.features.search || (readerContext.capability.mode === "pdf-pages" && !readerContext.ocrManifestUrl && (!readerContext.pdfHybridUrl || readerContext.pdfHybridSearchUnavailable));
readerContext.bookmarkRibbon.hidden = !readerContext.capability.features.bookmarks;
readerContext.readingProgressSummary.querySelector(".reader-progress-bookmark").hidden =
!readerContext.capability.features.bookmarks;
if (
(readerContext.panelState.selected === "media" && readerContext.mediaTab.hidden) ||
(readerContext.panelState.selected === "full-search" && readerContext.fullSearchButton.hidden)
)
readerContext.selectPanel("toc");
}
return {
disposeFormatResources,
registerReaderFormatAdapters,
resolveReaderSource,
start,
syncCapabilityControls
};
}
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