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JS - Collect and execute actions at doc and pages level

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* the goal is to execute actions like Open or OpenAction
 * can be tested with issue6106.pdf (auto-print)
 * once #12701 is merged, we can add page actions
This commit is contained in:
Calixte Denizet 2020-12-07 19:22:14 +01:00
parent 142f131ee1
commit 1e2173f038
18 changed files with 829 additions and 125 deletions
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88
src/core/annotation.js
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@ -21,11 +21,9 @@ import {
AnnotationReplyType,
AnnotationType,
assert,
bytesToString,
escapeString,
getModificationDate,
isString,
objectSize,
OPS,
shadow,
stringToPDFString,
@ -34,17 +32,9 @@ import {
warn,
} from "../shared/util.js";
import { Catalog, FileSpec, ObjectLoader } from "./obj.js";
import {
Dict,
isDict,
isName,
isRef,
isStream,
Name,
RefSet,
} from "./primitives.js";
import { collectActions, getInheritableProperty } from "./core_utils.js";
import { Dict, isDict, isName, isRef, isStream, Name } from "./primitives.js";
import { ColorSpace } from "./colorspace.js";
import { getInheritableProperty } from "./core_utils.js";
import { OperatorList } from "./operator_list.js";
import { StringStream } from "./stream.js";
import { writeDict } from "./writer.js";
@ -977,7 +967,7 @@ class WidgetAnnotation extends Annotation {
data.annotationType = AnnotationType.WIDGET;
data.fieldName = this._constructFieldName(dict);
data.actions = this._collectActions(params.xref, dict);
data.actions = collectActions(params.xref, dict, AnnotationActionEventType);
const fieldValue = getInheritableProperty({
dict,
@ -1459,78 +1449,6 @@ class WidgetAnnotation extends Annotation {
return localResources || Dict.empty;
}
_collectJS(entry, xref, list, parents) {
if (!entry) {
return;
}
let parent = null;
if (isRef(entry)) {
if (parents.has(entry)) {
// If we've already found entry then we've a cycle.
return;
}
parent = entry;
parents.put(parent);
entry = xref.fetch(entry);
}
if (Array.isArray(entry)) {
for (const element of entry) {
this._collectJS(element, xref, list, parents);
}
} else if (entry instanceof Dict) {
if (isName(entry.get("S"), "JavaScript") && entry.has("JS")) {
const js = entry.get("JS");
let code;
if (isStream(js)) {
code = bytesToString(js.getBytes());
} else {
code = js;
}
code = stringToPDFString(code);
if (code) {
list.push(code);
}
}
this._collectJS(entry.getRaw("Next"), xref, list, parents);
}
if (parent) {
parents.remove(parent);
}
}
_collectActions(xref, dict) {
const actions = Object.create(null);
if (dict.has("AA")) {
const additionalActions = dict.get("AA");
for (const key of additionalActions.getKeys()) {
const action = AnnotationActionEventType[key];
if (!action) {
continue;
}
const actionDict = additionalActions.getRaw(key);
const parents = new RefSet();
const list = [];
this._collectJS(actionDict, xref, list, parents);
if (list.length > 0) {
actions[action] = list;
}
}
}
// Collect the Action if any (we may have one on pushbutton).
if (dict.has("A")) {
const actionDict = dict.get("A");
const parents = new RefSet();
const list = [];
this._collectJS(actionDict, xref, list, parents);
if (list.length > 0) {
actions.Action = list;
}
}
return objectSize(actions) > 0 ? actions : null;
}
getFieldObject() {
if (this.data.fieldType === "Sig") {
return {