File size: 7,324 Bytes
2c1d035 b3b9424 2c1d035 aee3b65 2c1d035 9ebca63 2c1d035 aee3b65 2c1d035 b3b9424 f51d951 b3b9424 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 | export function createReaderLifecycle(readerContext) {
function readerAbortError() {
return new DOMException("Reader work cancelled", "AbortError");
}
function assertReaderActive() {
if (readerContext.readerAbortController.signal.aborted || readerContext.readerRuntime.state.lifecycle.disposed)
throw readerContext.readerAbortError();
}
function trackReaderResource(cleanup) {
if (readerContext.readerAbortController.signal.aborted) cleanup();
else readerContext.readerResources.add(cleanup);
return () => readerContext.readerResources.delete(cleanup);
}
function stopReaderWork() {
readerContext.readerAbortController.abort();
for (const cleanup of readerContext.readerResources) {
try {
cleanup();
} catch (_) {}
}
readerContext.readerResources.clear();
}
function awaitReader(promise, extraSignal = null) {
return new Promise((resolve, reject) => {
let settled = false;
const signals = extraSignal ? [readerContext.readerAbortController.signal, extraSignal] : [readerContext.readerAbortController.signal];
const finish = (callback, value) => {
if (settled) return;
settled = true;
signals.forEach(signal => signal.removeEventListener("abort", abort));
callback(value);
};
const abort = () => finish(reject, readerContext.readerAbortError());
Promise.resolve(promise)
.then(value => finish(resolve, value), error => finish(reject, error));
if (signals.some(signal => signal.aborted)) abort();
else signals.forEach(signal => signal.addEventListener("abort", abort, { once: true }));
});
}
function waitForReader(delay = 0, animationFrame = false) {
return new Promise((resolve, reject) => {
readerContext.assertReaderActive();
const signal = readerContext.readerAbortController.signal;
const abort = () => {
if (animationFrame) cancelAnimationFrame(handle);
else clearTimeout(handle);
reject(readerContext.readerAbortError());
};
const done = () => {
signal.removeEventListener("abort", abort);
resolve();
};
const handle = animationFrame ? requestAnimationFrame(done) : setTimeout(done, delay);
signal.addEventListener("abort", abort, { once: true });
});
}
function setReaderPhase(phase) {
return readerContext.readerRuntime.setPhase(phase);
}
function setReaderStage(stage) {
return readerContext.readerRuntime.setStage(stage);
}
function classifyReaderError(error, fallback = "READER_PARSE") {
if (["READER_ENGINE_NETWORK", "READER_RESTORE", "READER_PDF_TRANSPORT"].includes(error?.code)) return error.code;
const value = `${error?.name || ""} ${error?.message || error || ""}`;
if (/AbortError|timeout|network|fetch|HTTP\s*\d+/i.test(value)) return "READER_NETWORK";
if (
/EPUB_INVALID|corrupt|damage|truncated|central directory|end of data|invalid zip/i.test(value)
)
return "READER_CORRUPT";
return fallback;
}
function markReaderContentReady() {
if (["foliate", "epub-chapters"].includes(readerContext.capability?.mode) && readerContext.loadingIndicator.isConnected)
readerContext.foliateScrollAnchors.preserve(() => readerContext.loadingIndicator.remove());
else readerContext.loadingIndicator.remove();
readerContext.loadingStatus.hidden = true;
}
function nextReaderGeneration(name) {
const generation = readerContext.readerRuntime.nextGeneration(name);
if (name === "search") readerContext.drainPdfTextWaiters();
return generation;
}
function isReaderGenerationCurrent(name, value) {
return !readerContext.readerAbortController.signal.aborted && readerContext.readerRuntime.isCurrent(name, value);
}
function reportNavigationError(error, generation) {
if (readerContext.isReaderGenerationCurrent("navigation", generation) && error?.name !== "AbortError")
console.warn("Reader navigation failed", error);
}
function disposeReader() {
if (readerContext.readerLifecycle.disposed) return;
readerContext.updateDocumentState({ restorationReady: false });
readerContext.readerRuntime.dispose();
readerContext.contentSanitizerObserver?.disconnect();
readerContext.contentSanitizerObserver = null;
clearTimeout(readerContext.saveTimer);
clearTimeout(readerContext.themeAnimationTimer);
clearTimeout(readerContext.panelAnimationTimer);
for (const frame of [readerContext.markerFrame, readerContext.foliateScrollFrame, readerContext.foliateWindowFrame, readerContext.epubSeekFrame])
if (frame) cancelAnimationFrame(frame);
readerContext.saveTimer =
readerContext.themeAnimationTimer =
readerContext.panelAnimationTimer =
readerContext.markerFrame =
readerContext.foliateScrollFrame =
readerContext.foliateWindowFrame =
readerContext.epubSeekFrame =
0;
VoiceOfMLReaderStore.dispose?.();
}
function fail(message, code = "READER_PARSE") {
if (readerContext.readerLifecycle.disposed || readerContext.readerAbortController.signal.aborted) return;
readerContext.updateDocumentState({ restorationReady: false });
readerContext.readerRuntime.fail(code);
if (["READER_PDF_TRANSPORT", "READER_MEDIA"].includes(code)) readerContext.setReaderPanelOpen(false);
readerContext.stopReaderWork();
readerContext.readerRequestManager.dispose();
readerContext.formatAdapters.dispose();
window.__VOICE_PDF_PRELOAD__?.dispose();
readerContext.content.dataset.errorCode = code;
readerContext.loadingStatus.hidden = true;
readerContext.markReaderContentReady();
const visibleMessage = `${message} [${readerContext.readerLifecycle.stage}]`;
readerContext.content.innerHTML = `<div class="reader-error" role="alert"></div>`;
readerContext.content.querySelector(".reader-error").textContent = visibleMessage;
if (["READER_ENGINE_NETWORK", "READER_RESTORE", "READER_PDF_TRANSPORT", "READER_MEDIA"].includes(code)) {
const retry = document.createElement("button");
retry.type = "button";
retry.className = "text-button";
retry.id = "reader-engine-retry";
retry.textContent = "重试加载";
// Reload clears the browser's failed module map and preserves this book URL.
retry.addEventListener("click", async () => {
if (["READER_PDF_TRANSPORT", "READER_MEDIA"].includes(code)) {
let timer;
try {
await Promise.race([readerContext.progressSaveChain,
new Promise(resolve => { timer = setTimeout(resolve, 500); })]);
} finally { clearTimeout(timer); }
if (readerContext.readerLifecycle.disposed) return;
}
location.reload();
});
readerContext.content.querySelector(".reader-error").append(document.createElement("br"), retry);
}
readerContext.status.textContent = "无法打开";
}
return {
readerAbortError,
assertReaderActive,
trackReaderResource,
stopReaderWork,
awaitReader,
waitForReader,
setReaderPhase,
setReaderStage,
classifyReaderError,
markReaderContentReady,
nextReaderGeneration,
isReaderGenerationCurrent,
reportNavigationError,
disposeReader,
fail
};
}
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