Move packaging to webpack and update/clean all configs

Signed-off-by: John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>

3 files changed, 206 insertions, 0 deletions

diff --git a/src/main.js b/src/main.js
new file mode 100644
index 0000000..d86bb38
--- /dev/null
+++ b/src/main.js
@@ -0,0 +1,49 @@
+
+/**
+ * @copyright Copyright (c) 2020 John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @author John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+import { generateFilePath } from '@nextcloud/router'
+import { getRequestToken } from '@nextcloud/auth'
+
+import PDFView from './views/PDFView'
+
+// CSP config for webpack dynamic chunk loading
+// eslint-disable-next-line
+__webpack_nonce__ = btoa(getRequestToken())
+
+// Correct the root of the app for chunk loading
+// OC.linkTo matches the apps folders
+// OC.generateUrl ensure the index.php (or not)
+// We do not want the index.php since we're loading files
+// eslint-disable-next-line
+__webpack_public_path__ = generateFilePath('files_pdfviewer', '', 'js/')
+
+window.addEventListener('DOMContentLoaded', function() {
+	OCA.Viewer.registerHandler({
+		id: 'pdf',
+
+		mimes: [
+			'application/pdf',
+		],
+
+		component: PDFView,
+	})
+})
diff --git a/src/views/PDFView.vue b/src/views/PDFView.vue
new file mode 100644
index 0000000..f9939d6
--- /dev/null
+++ b/src/views/PDFView.vue
@@ -0,0 +1,52 @@
+<!--
+  - @copyright Copyright (c) 2018 John Molakvoæ <skjnldsv@protonmail.com>
+  -
+  - @author John Molakvoæ <skjnldsv@protonmail.com>
+  - @author Charismatic Claire <charismatic.claire@noservice.noreply>
+  -
+  - @license GNU AGPL version 3 or any later version
+  -
+  - This program is free software: you can redistribute it and/or modify
+  - it under the terms of the GNU Affero General Public License as
+  - published by the Free Software Foundation, either version 3 of the
+  - License, or (at your option) any later version.
+  -
+  - This program is distributed in the hope that it will be useful,
+  - but WITHOUT ANY WARRANTY; without even the implied warranty of
+  - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+  - GNU Affero General Public License for more details.
+  -
+  - You should have received a copy of the GNU Affero General Public License
+  - along with this program. If not, see <http://www.gnu.org/licenses/>.
+  -
+  -->
+<template>
+	<iframe :src="iframeSrc" />
+</template>
+
+<script>
+import { generateUrl } from '@nextcloud/router'
+
+export default {
+	name: 'PDFView',
+
+	computed: {
+		iframeSrc() {
+			return generateUrl('/apps/files_pdfviewer/?file={file}', {
+				file: this.davPath,
+			})
+		},
+	},
+
+	async mounted() {
+		this.doneLoading()
+	},
+}
+</script>
+
+<style lang="scss" scoped>
+iframe {
+	width: 100%;
+	height: 100%;
+}
+</style>
diff --git a/src/workersrc.js b/src/workersrc.js
new file mode 100644
index 0000000..9009b49
--- /dev/null
+++ b/src/workersrc.js
@@ -0,0 +1,105 @@
+/* eslint-disable no-undef */
+/**
+ * Checks if the page is displayed in an iframe. If not redirect to /.
+ **/
+function redirectIfNotDisplayedInFrame() {
+	try {
+		if (window.frameElement) {
+			return
+		}
+	} catch (e) {
+		console.debug(e)
+	}
+
+	window.location.href = '/'
+}
+redirectIfNotDisplayedInFrame()
+
+// When "PDFViewerApplication.webViewerInitialized" is executed (once
+// "PDFViewerApplication.initialize" is done) it opens the PDF file via URL,
+// which requires the PDFViewerApplication to be properly configured, so the
+// custom initialization has to be executed before that. This can be done by
+// listening to the "webviewerloaded" event, which is emitted after
+// "PDFViewerApplication" and "PDFViewerApplicationOptions" are globally set and
+// before "PDFViewerApplication.initialize" is executed.
+function initializeCustomPDFViewerApplication() {
+	// Preferences override options, so they must be disabled for
+	// "externalLinkTarget" to take effect.
+	PDFViewerApplicationOptions.set('disablePreferences', true)
+	PDFViewerApplicationOptions.set('externalLinkTarget', pdfjsLib.LinkTarget.BLANK)
+	PDFViewerApplicationOptions.set('isEvalSupported', false)
+	PDFViewerApplicationOptions.set('workerSrc', document.getElementsByTagName('head')[0].getAttribute('data-workersrc'))
+	PDFViewerApplicationOptions.set('cMapUrl', document.getElementsByTagName('head')[0].getAttribute('data-cmapurl'))
+
+	// The download has to be forced to use the URL of the file; by default
+	// "PDFViewerApplication.download" uses a blob, but this causes a CSP error
+	// (at least, in Firefox) when trying to download it.
+	PDFViewerApplication.download = function() {
+		// "isDataSchema()" and "getPDFFileNameFromURL()" are copied from
+		// "vendor/pdfjs/web/viewer.js", as the functions defined in that file
+		// can not be accessed from the outside.
+		function isDataSchema(url) {
+			let i = 0
+			const ii = url.length
+			while (i < ii && url[i].trim() === '') {
+				i++
+			}
+			return url.substr(i, 5).toLowerCase() === 'data:'
+		}
+
+		function getPDFFileNameFromURL(url) {
+			const defaultFilename = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'document.pdf'
+
+			if (isDataSchema(url)) {
+				console.warn('getPDFFileNameFromURL: ' + 'ignoring "data:" URL for performance reasons.')
+				return defaultFilename
+			}
+			const reURI = /^(?:(?:[^:]+:)?\/\/[^/]+)?([^?#]*)(\?[^#]*)?(#.*)?$/
+			const reFilename = /[^/?#=]+\.pdf\b(?!.*\.pdf\b)/i
+			const splitURI = reURI.exec(url)
+			let suggestedFilename = reFilename.exec(splitURI[1]) || reFilename.exec(splitURI[2]) || reFilename.exec(splitURI[3])
+			if (suggestedFilename) {
+				suggestedFilename = suggestedFilename[0]
+				if (suggestedFilename.indexOf('%') !== -1) {
+					try {
+						suggestedFilename = reFilename.exec(decodeURIComponent(suggestedFilename))[0]
+					} catch (e) {
+						console.debug(e)
+					}
+				}
+			}
+			return suggestedFilename || defaultFilename
+		}
+
+		const url = decodeURIComponent(window.location.search.substr(6))
+
+		this.downloadManager.downloadUrl(url, getPDFFileNameFromURL(url))
+	}
+
+	const hideDownload = window.parent.document.getElementById('hideDownload').value === 'true'
+	if (hideDownload) {
+		// Disable download function when downloads are hidden, as even if the
+		// buttons in the UI are hidden the download could still be triggered
+		// with Ctrl|Meta+S.
+		PDFViewerApplication.download = function() {
+		}
+
+		// Disable printing service when downloads are hidden, as even if the
+		// buttons in the UI are hidden the printing could still be triggered
+		// with Ctrl|Meta+P.
+		// Abuse the "supportsPrinting" parameter, which signals that the
+		// browser does not fully support printing, to make PDFViewer disable
+		// the printing service.
+		// "supportsPrinting" is a getter function, so it needs to be deleted
+		// before replacing it with a simple value.
+		delete PDFViewerApplication.supportsPrinting
+		PDFViewerApplication.supportsPrinting = false
+		// When printing is not supported a warning is shown by the default
+		// "beforePrint" function when trying to print. That function needs to
+		// be replaced with an empty one to prevent that warning to be shown.
+		PDFViewerApplication.beforePrint = function() {
+		}
+	}
+}
+
+document.addEventListener('webviewerloaded', initializeCustomPDFViewerApplication, true)