Sakurai/pdf.js
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Disable the "copy all text" feature when enablePermissions is set (PR 16286 follow-up)

Browse Source 
When permissions are enabled and the PDF document doesn't have the COPY-flag set, it shouldn't be possible for the user to trigger the "copy all text" feature.
This commit is contained in:
Jonas Jenwald 2023-04-18 20:49:37 +02:00
parent 3e292dc222
commit 6bfcc96651
1 changed files with 18 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
web/pdf_viewer.js
View File

@ -255,11 +255,6 @@ class PDFViewer {
throw new Error("The `container` must be absolutely positioned."); throw new Error("The `container` must be absolutely positioned.");
} }
} }
const hiddenCopyElement = (this.#hiddenCopyElement =
document.createElement("div"));
hiddenCopyElement.id = "hiddenCopyElement";
this.viewer.before(hiddenCopyElement);
this.#resizeObserver.observe(this.container); this.#resizeObserver.observe(this.container);
this.eventBus = options.eventBus; this.eventBus = options.eventBus;
@ -576,6 +571,15 @@ class PDFViewer {
}; };
} }
#createHiddenCopyElement() {
if (this.#hiddenCopyElement) {
return;
}
const element = (this.#hiddenCopyElement = document.createElement("div"));
element.id = "hiddenCopyElement";
this.viewer.before(element);
}
/** /**
* Currently only *some* permissions are supported. * Currently only *some* permissions are supported.
* @returns {Object} * @returns {Object}
@ -587,11 +591,14 @@ class PDFViewer {
textLayerMode: this.textLayerMode, textLayerMode: this.textLayerMode,
}; };
if (!permissions) { if (!permissions) {
this.#createHiddenCopyElement();
return params; return params;
} }
if (!permissions.includes(PermissionFlag.COPY)) { if (!permissions.includes(PermissionFlag.COPY)) {
this.viewer.classList.add(ENABLE_PERMISSIONS_CLASS); this.viewer.classList.add(ENABLE_PERMISSIONS_CLASS);
} else {
this.#createHiddenCopyElement();
} }
if (!permissions.includes(PermissionFlag.MODIFY_CONTENTS)) { if (!permissions.includes(PermissionFlag.MODIFY_CONTENTS)) {
@ -1053,7 +1060,12 @@ class PDFViewer {
// Reset all PDF document permissions. // Reset all PDF document permissions.
this.viewer.classList.remove(ENABLE_PERMISSIONS_CLASS); this.viewer.classList.remove(ENABLE_PERMISSIONS_CLASS);
document.removeEventListener("copy", this.#copyCallbackBound); if (this.#hiddenCopyElement) {
document.removeEventListener("copy", this.#copyCallbackBound);
this.#hiddenCopyElement.remove();
this.#hiddenCopyElement = null;
}
} }
#ensurePageViewVisible() { #ensurePageViewVisible() {