Add the possibility to collect Javascript actions
This commit is contained in:
Calixte Denizet
parent
fd1d9cc85f
commit
71ecc3129b
@ -14,12 +14,14 @@
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*/
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import {
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AnnotationActionEventType,
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AnnotationBorderStyleType,
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AnnotationFieldFlag,
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AnnotationFlag,
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AnnotationReplyType,
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AnnotationType,
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assert,
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bytesToString,
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escapeString,
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getModificationDate,
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isString,
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@ -30,7 +32,15 @@ import {
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warn,
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} from "../shared/util.js";
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import { Catalog, FileSpec, ObjectLoader } from "./obj.js";
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import { Dict, isDict, isName, isRef, isStream, Name } from "./primitives.js";
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import {
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Dict,
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isDict,
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isName,
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isRef,
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isStream,
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Name,
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RefSet,
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} from "./primitives.js";
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import { ColorSpace } from "./colorspace.js";
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import { getInheritableProperty } from "./core_utils.js";
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import { OperatorList } from "./operator_list.js";
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@ -569,6 +579,20 @@ class Annotation {
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return null;
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}
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/**
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* Get field data for usage in JS sandbox.
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*
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* Field object is defined here:
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* https://www.adobe.com/content/dam/acom/en/devnet/acrobat/pdfs/js_api_reference.pdf#page=16
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*
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* @public
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* @memberof Annotation
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* @returns {Object | null}
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*/
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getFieldObject() {
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return null;
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}
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/**
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* Reset the annotation.
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*
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@ -903,6 +927,7 @@ class WidgetAnnotation extends Annotation {
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data.annotationType = AnnotationType.WIDGET;
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data.fieldName = this._constructFieldName(dict);
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data.actions = this._collectActions(params.xref, dict);
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const fieldValue = getInheritableProperty({
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dict,
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@ -937,6 +962,7 @@ class WidgetAnnotation extends Annotation {
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}
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data.readOnly = this.hasFieldFlag(AnnotationFieldFlag.READONLY);
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data.hidden = this.hasFieldFlag(AnnotationFieldFlag.HIDDEN);
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// Hide signatures because we cannot validate them, and unset the fieldValue
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// since it's (most likely) a `Dict` which is non-serializable and will thus
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@ -944,6 +970,7 @@ class WidgetAnnotation extends Annotation {
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if (data.fieldType === "Sig") {
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data.fieldValue = null;
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this.setFlags(AnnotationFlag.HIDDEN);
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data.hidden = true;
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}
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}
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@ -1366,6 +1393,87 @@ class WidgetAnnotation extends Annotation {
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}
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return localResources || Dict.empty;
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}
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_collectJS(entry, xref, list, parents) {
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if (!entry) {
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return;
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}
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let parent = null;
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if (isRef(entry)) {
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if (parents.has(entry)) {
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// If we've already found entry then we've a cycle.
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return;
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}
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parent = entry;
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parents.put(parent);
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entry = xref.fetch(entry);
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}
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if (Array.isArray(entry)) {
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for (const element of entry) {
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this._collectJS(element, xref, list, parents);
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}
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} else if (entry instanceof Dict) {
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if (isName(entry.get("S"), "JavaScript") && entry.has("JS")) {
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const js = entry.get("JS");
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let code;
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if (isStream(js)) {
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code = bytesToString(js.getBytes());
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} else {
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code = js;
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}
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code = stringToPDFString(code);
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if (code) {
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list.push(code);
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}
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}
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this._collectJS(entry.getRaw("Next"), xref, list, parents);
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}
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if (parent) {
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parents.remove(parent);
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}
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}
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_collectActions(xref, dict) {
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const actions = Object.create(null);
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if (dict.has("AA")) {
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const additionalActions = dict.get("AA");
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for (const key of additionalActions.getKeys()) {
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if (key in AnnotationActionEventType) {
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const actionDict = additionalActions.getRaw(key);
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const parents = new RefSet();
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const list = [];
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this._collectJS(actionDict, xref, list, parents);
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if (list.length > 0) {
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actions[AnnotationActionEventType[key]] = list;
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}
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}
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}
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}
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// Collect the Action if any (we may have one on pushbutton)
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if (dict.has("A")) {
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const actionDict = dict.get("A");
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const parents = new RefSet();
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const list = [];
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this._collectJS(actionDict, xref, list, parents);
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if (list.length > 0) {
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actions.Action = list;
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}
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}
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return actions;
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}
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getFieldObject() {
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if (this.data.fieldType === "Sig") {
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return {
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id: this.data.id,
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value: null,
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type: "signature",
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};
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}
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return null;
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}
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}
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class TextWidgetAnnotation extends WidgetAnnotation {
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@ -1516,6 +1624,23 @@ class TextWidgetAnnotation extends WidgetAnnotation {
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return chunks;
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}
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getFieldObject() {
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return {
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id: this.data.id,
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value: this.data.fieldValue,
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multiline: this.data.multiLine,
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password: this.hasFieldFlag(AnnotationFieldFlag.PASSWORD),
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charLimit: this.data.maxLen,
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comb: this.data.comb,
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editable: !this.data.readOnly,
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hidden: this.data.hidden,
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name: this.data.fieldName,
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rect: this.data.rect,
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actions: this.data.actions,
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type: "text",
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};
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}
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}
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class ButtonWidgetAnnotation extends WidgetAnnotation {
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@ -1793,6 +1918,28 @@ class ButtonWidgetAnnotation extends WidgetAnnotation {
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docBaseUrl: params.pdfManager.docBaseUrl,
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});
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}
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getFieldObject() {
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let type = "button";
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let value = null;
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if (this.data.checkBox) {
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type = "checkbox";
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value = this.data.fieldValue && this.data.fieldValue !== "Off";
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} else if (this.data.radioButton) {
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type = "radiobutton";
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value = this.data.fieldValue === this.data.buttonValue;
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}
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return {
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id: this.data.id,
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value,
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editable: !this.data.readOnly,
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name: this.data.fieldName,
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rect: this.data.rect,
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hidden: this.data.hidden,
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actions: this.data.actions,
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type,
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};
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}
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}
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class ChoiceWidgetAnnotation extends WidgetAnnotation {
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@ -1843,6 +1990,23 @@ class ChoiceWidgetAnnotation extends WidgetAnnotation {
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this.data.multiSelect = this.hasFieldFlag(AnnotationFieldFlag.MULTISELECT);
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this._hasText = true;
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}
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getFieldObject() {
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const type = this.data.combo ? "combobox" : "listbox";
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const value =
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this.data.fieldValue.length > 0 ? this.data.fieldValue[0] : null;
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return {
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id: this.data.id,
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value,
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editable: !this.data.readOnly,
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name: this.data.fieldName,
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rect: this.data.rect,
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multipleSelection: this.data.multiSelect,
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hidden: this.data.hidden,
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actions: this.data.actions,
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type,
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};
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}
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}
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class TextAnnotation extends MarkupAnnotation {
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@ -708,7 +708,7 @@ class PDFDocument {
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}
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get formInfo() {
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const formInfo = { hasAcroForm: false, hasXfa: false };
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const formInfo = { hasAcroForm: false, hasXfa: false, fields: null };
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const acroForm = this.catalog.acroForm;
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if (!acroForm) {
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return shadow(this, "formInfo", formInfo);
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@ -736,6 +736,9 @@ class PDFDocument {
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const hasOnlyDocumentSignatures =
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!!(sigFlags & 0x1) && this._hasOnlyDocumentSignatures(fields);
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formInfo.hasAcroForm = hasFields && !hasOnlyDocumentSignatures;
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if (hasFields) {
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formInfo.fields = fields;
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}
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} catch (ex) {
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if (ex instanceof MissingDataException) {
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throw ex;
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@ -935,6 +938,73 @@ class PDFDocument {
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? this.catalog.cleanup(manuallyTriggered)
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: clearPrimitiveCaches();
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}
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_collectFieldObjects(name, fieldRef, promises) {
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const field = this.xref.fetchIfRef(fieldRef);
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if (field.has("T")) {
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const partName = stringToPDFString(field.get("T"));
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if (name === "") {
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name = partName;
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} else {
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name = `${name}.${partName}`;
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}
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}
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if (!(name in promises)) {
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promises.set(name, []);
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}
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promises.get(name).push(
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AnnotationFactory.create(
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this.xref,
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fieldRef,
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this.pdfManager,
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this._localIdFactory
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)
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.then(annotation => annotation.getFieldObject())
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.catch(function (reason) {
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warn(`_collectFieldObjects: "${reason}".`);
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return null;
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})
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);
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if (field.has("Kids")) {
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const kids = field.get("Kids");
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for (const kid of kids) {
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this._collectFieldObjects(name, kid, promises);
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}
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}
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}
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get fieldObjects() {
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const formInfo = this.formInfo;
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if (!formInfo.fields) {
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return shadow(this, "fieldObjects", Promise.resolve(null));
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}
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const allFields = Object.create(null);
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const fieldPromises = new Map();
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for (const fieldRef of formInfo.fields) {
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this._collectFieldObjects("", fieldRef, fieldPromises);
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}
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const allPromises = [];
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for (const [name, promises] of fieldPromises.entries()) {
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allPromises.push(
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Promise.all(promises).then(fields => {
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fields = fields.filter(field => field !== null);
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if (fields.length > 0) {
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allFields[name] = fields;
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}
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})
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);
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}
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return shadow(
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this,
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"fieldObjects",
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Promise.all(allPromises).then(() => allFields)
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);
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}
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}
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export { Page, PDFDocument };
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@ -516,6 +516,10 @@ class WorkerMessageHandler {
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});
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});
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handler.on("GetFieldObjects", function (data) {
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return pdfManager.ensureDoc("fieldObjects");
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});
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handler.on("SaveDocument", function ({
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numPages,
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annotationStorage,
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@ -876,6 +876,14 @@ class PDFDocumentProxy {
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saveDocument(annotationStorage) {
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return this._transport.saveDocument(annotationStorage);
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}
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/**
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* @returns {Promise<Array<Object>>} A promise that is resolved with an
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* {Array<Object>} containing field data for the JS sandbox.
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*/
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getFieldObjects() {
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return this._transport.getFieldObjects();
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}
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}
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/**
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@ -2549,6 +2557,10 @@ class WorkerTransport {
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});
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}
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getFieldObjects() {
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return this.messageHandler.sendWithPromise("GetFieldObjects", null);
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}
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getDestinations() {
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return this.messageHandler.sendWithPromise("GetDestinations", null);
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}
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@ -144,6 +144,28 @@ const AnnotationBorderStyleType = {
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UNDERLINE: 5,
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};
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const AnnotationActionEventType = {
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E: "MouseEnter",
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X: "MouseExit",
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D: "MouseDown",
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U: "MouseUp",
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Fo: "Focus",
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Bl: "Blur",
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PO: "PageOpen",
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PC: "PageClose",
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PV: "PageVisible",
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PI: "PageInvisible",
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K: "Keystroke",
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F: "Format",
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V: "Validate",
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C: "Calculate",
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WC: "WillClose",
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WS: "WillSave",
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DS: "DidSave",
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WP: "WillPrint",
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DP: "DidPrint",
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};
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const StreamType = {
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UNKNOWN: "UNKNOWN",
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FLATE: "FLATE",
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@ -971,6 +993,7 @@ export {
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OPS,
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VerbosityLevel,
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UNSUPPORTED_FEATURES,
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AnnotationActionEventType,
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AnnotationBorderStyleType,
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AnnotationFieldFlag,
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AnnotationFlag,
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@ -298,6 +298,7 @@ describe("annotation", function () {
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expect(annotation.hasFlag(AnnotationFlag.NOZOOM)).toEqual(true);
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expect(annotation.hasFlag(AnnotationFlag.PRINT)).toEqual(true);
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expect(annotation.hasFlag(AnnotationFlag.READONLY)).toEqual(false);
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expect(annotation.hasFlag(AnnotationFlag.HIDDEN)).toEqual(false);
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});
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it("should be viewable and not printable by default", function () {
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@ -1433,6 +1434,7 @@ describe("annotation", function () {
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expect(data.textAlignment).toEqual(null);
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expect(data.maxLen).toEqual(null);
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expect(data.readOnly).toEqual(false);
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expect(data.hidden).toEqual(false);
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expect(data.multiLine).toEqual(false);
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expect(data.comb).toEqual(false);
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done();
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@ -1457,6 +1459,7 @@ describe("annotation", function () {
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expect(data.textAlignment).toEqual(null);
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expect(data.maxLen).toEqual(null);
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expect(data.readOnly).toEqual(false);
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expect(data.hidden).toEqual(false);
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expect(data.multiLine).toEqual(false);
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expect(data.comb).toEqual(false);
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done();
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@ -1484,6 +1487,7 @@ describe("annotation", function () {
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expect(data.textAlignment).toEqual(1);
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expect(data.maxLen).toEqual(20);
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expect(data.readOnly).toEqual(true);
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expect(data.hidden).toEqual(false);
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expect(data.multiLine).toEqual(true);
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done();
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}, done.fail);
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@ -1863,6 +1867,92 @@ describe("annotation", function () {
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done();
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}, done.fail);
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});
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it("should get field object for usage in JS sandbox", function (done) {
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const textWidgetRef = Ref.get(123, 0);
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const xDictRef = Ref.get(141, 0);
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const dDictRef = Ref.get(262, 0);
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const next0Ref = Ref.get(314, 0);
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const next1Ref = Ref.get(271, 0);
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const next2Ref = Ref.get(577, 0);
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const next00Ref = Ref.get(413, 0);
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const xDict = new Dict();
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const dDict = new Dict();
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const next0Dict = new Dict();
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const next1Dict = new Dict();
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const next2Dict = new Dict();
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const next00Dict = new Dict();
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const xref = new XRefMock([
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{ ref: textWidgetRef, data: textWidgetDict },
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{ ref: xDictRef, data: xDict },
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{ ref: dDictRef, data: dDict },
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{ ref: next0Ref, data: next0Dict },
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{ ref: next00Ref, data: next00Dict },
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{ ref: next1Ref, data: next1Dict },
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{ ref: next2Ref, data: next2Dict },
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]);
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const JS = Name.get("JavaScript");
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const additionalActionsDict = new Dict();
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const eDict = new Dict();
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eDict.set("JS", "hello()");
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eDict.set("S", JS);
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additionalActionsDict.set("E", eDict);
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// Test the cycle detection here
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xDict.set("JS", "world()");
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xDict.set("S", JS);
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xDict.set("Next", [next0Ref, next1Ref, next2Ref, xDictRef]);
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next0Dict.set("JS", "olleh()");
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next0Dict.set("S", JS);
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next0Dict.set("Next", next00Ref);
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next00Dict.set("JS", "foo()");
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next00Dict.set("S", JS);
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next00Dict.set("Next", next0Ref);
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next1Dict.set("JS", "dlrow()");
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next1Dict.set("S", JS);
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next1Dict.set("Next", xDictRef);
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next2Dict.set("JS", "oof()");
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next2Dict.set("S", JS);
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dDict.set("JS", "bar()");
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dDict.set("S", JS);
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dDict.set("Next", dDictRef);
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additionalActionsDict.set("D", dDictRef);
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additionalActionsDict.set("X", xDictRef);
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textWidgetDict.set("AA", additionalActionsDict);
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partialEvaluator.xref = xref;
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AnnotationFactory.create(
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xref,
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textWidgetRef,
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||||
pdfManagerMock,
|
||||
idFactoryMock
|
||||
)
|
||||
.then(annotation => {
|
||||
return annotation.getFieldObject();
|
||||
})
|
||||
.then(object => {
|
||||
const actions = object.actions;
|
||||
expect(actions.MouseEnter).toEqual(["hello()"]);
|
||||
expect(actions.MouseExit).toEqual([
|
||||
"world()",
|
||||
"olleh()",
|
||||
"foo()",
|
||||
"dlrow()",
|
||||
"oof()",
|
||||
]);
|
||||
expect(actions.MouseDown).toEqual(["bar()"]);
|
||||
done();
|
||||
}, done.fail);
|
||||
});
|
||||
});
|
||||
|
||||
describe("ButtonWidgetAnnotation", function () {
|
||||
@ -2524,7 +2614,11 @@ describe("annotation", function () {
|
||||
it("should handle push buttons", function (done) {
|
||||
const buttonWidgetRef = Ref.get(124, 0);
|
||||
buttonWidgetDict.set("Ff", AnnotationFieldFlag.PUSHBUTTON);
|
||||
buttonWidgetDict.set("A", "whatever");
|
||||
|
||||
const actionDict = new Dict();
|
||||
actionDict.set("S", Name.get("JavaScript"));
|
||||
actionDict.set("JS", "do_something();");
|
||||
buttonWidgetDict.set("A", actionDict);
|
||||
|
||||
const xref = new XRefMock([
|
||||
{ ref: buttonWidgetRef, data: buttonWidgetDict },
|
||||
@ -2538,6 +2632,7 @@ describe("annotation", function () {
|
||||
).then(({ data }) => {
|
||||
expect(data.annotationType).toEqual(AnnotationType.WIDGET);
|
||||
expect(data.pushButton).toEqual(true);
|
||||
expect(data.actions.Action).toEqual(["do_something();"]);
|
||||
done();
|
||||
}, done.fail);
|
||||
});
|
||||
@ -2779,6 +2874,7 @@ describe("annotation", function () {
|
||||
).then(({ data }) => {
|
||||
expect(data.annotationType).toEqual(AnnotationType.WIDGET);
|
||||
expect(data.readOnly).toEqual(false);
|
||||
expect(data.hidden).toEqual(false);
|
||||
expect(data.combo).toEqual(false);
|
||||
expect(data.multiSelect).toEqual(false);
|
||||
done();
|
||||
@ -2801,6 +2897,7 @@ describe("annotation", function () {
|
||||
).then(({ data }) => {
|
||||
expect(data.annotationType).toEqual(AnnotationType.WIDGET);
|
||||
expect(data.readOnly).toEqual(false);
|
||||
expect(data.hidden).toEqual(false);
|
||||
expect(data.combo).toEqual(false);
|
||||
expect(data.multiSelect).toEqual(false);
|
||||
done();
|
||||
@ -2828,6 +2925,7 @@ describe("annotation", function () {
|
||||
).then(({ data }) => {
|
||||
expect(data.annotationType).toEqual(AnnotationType.WIDGET);
|
||||
expect(data.readOnly).toEqual(true);
|
||||
expect(data.hidden).toEqual(false);
|
||||
expect(data.combo).toEqual(true);
|
||||
expect(data.multiSelect).toEqual(true);
|
||||
done();
|
||||
|
||||
@ -63,6 +63,7 @@ describe("document", function () {
|
||||
expect(pdfDocument.formInfo).toEqual({
|
||||
hasAcroForm: false,
|
||||
hasXfa: false,
|
||||
fields: null,
|
||||
});
|
||||
});
|
||||
|
||||
@ -75,6 +76,7 @@ describe("document", function () {
|
||||
expect(pdfDocument.formInfo).toEqual({
|
||||
hasAcroForm: false,
|
||||
hasXfa: false,
|
||||
fields: null,
|
||||
});
|
||||
|
||||
acroForm.set("XFA", ["foo", "bar"]);
|
||||
@ -82,6 +84,7 @@ describe("document", function () {
|
||||
expect(pdfDocument.formInfo).toEqual({
|
||||
hasAcroForm: false,
|
||||
hasXfa: true,
|
||||
fields: null,
|
||||
});
|
||||
|
||||
acroForm.set("XFA", new StringStream(""));
|
||||
@ -89,6 +92,7 @@ describe("document", function () {
|
||||
expect(pdfDocument.formInfo).toEqual({
|
||||
hasAcroForm: false,
|
||||
hasXfa: false,
|
||||
fields: null,
|
||||
});
|
||||
|
||||
acroForm.set("XFA", new StringStream("non-empty"));
|
||||
@ -96,6 +100,7 @@ describe("document", function () {
|
||||
expect(pdfDocument.formInfo).toEqual({
|
||||
hasAcroForm: false,
|
||||
hasXfa: true,
|
||||
fields: null,
|
||||
});
|
||||
});
|
||||
|
||||
@ -108,6 +113,7 @@ describe("document", function () {
|
||||
expect(pdfDocument.formInfo).toEqual({
|
||||
hasAcroForm: false,
|
||||
hasXfa: false,
|
||||
fields: null,
|
||||
});
|
||||
|
||||
acroForm.set("Fields", ["foo", "bar"]);
|
||||
@ -115,6 +121,7 @@ describe("document", function () {
|
||||
expect(pdfDocument.formInfo).toEqual({
|
||||
hasAcroForm: true,
|
||||
hasXfa: false,
|
||||
fields: ["foo", "bar"],
|
||||
});
|
||||
|
||||
// If the first bit of the `SigFlags` entry is set and the `Fields` array
|
||||
@ -125,6 +132,7 @@ describe("document", function () {
|
||||
expect(pdfDocument.formInfo).toEqual({
|
||||
hasAcroForm: true,
|
||||
hasXfa: false,
|
||||
fields: ["foo", "bar"],
|
||||
});
|
||||
|
||||
const annotationDict = new Dict();
|
||||
@ -147,6 +155,7 @@ describe("document", function () {
|
||||
expect(pdfDocument.formInfo).toEqual({
|
||||
hasAcroForm: false,
|
||||
hasXfa: false,
|
||||
fields: null,
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
Loading…
Reference in New Issue
Block a user