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Bug 1330111 - Add FormLikeFactory.findRootForField API. r=johannh

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MozReview-Commit-ID: 6qo0hVx3J6p
This commit is contained in:
Matthew Noorenberghe 2017-01-31 23:54:45 -08:00
parent f54bfb10ae
commit 4cb5ec686a
1 changed files with 25 additions and 6 deletions
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31
toolkit/modules/FormLikeFactory.jsm
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@ -68,13 +68,16 @@ let FormLikeFactory = {
throw new Error("createFromField requires a field in a document");
}
if (aField.form) {
return this.createFromForm(aField.form);
let rootElement = this.findRootForField(aField);
if (rootElement instanceof Ci.nsIDOMHTMLFormElement) {
return this.createFromForm(rootElement);
}
let doc = aField.ownerDocument;
let elements = [];
for (let el of doc.documentElement.querySelectorAll("input")) {
for (let el of rootElement.querySelectorAll("input")) {
// Exclude elements inside the rootElement that are already in a <form> as
// they will be handled by their own FormLike.
if (!el.form) {
elements.push(el);
}
@ -82,17 +85,33 @@ let FormLikeFactory = {
let formLike = {
action: doc.baseURI,
autocomplete: "on",
// Exclude elements inside the rootElement that are already in a <form> as
// they will be handled by their own FormLike.
elements,
ownerDocument: doc,
rootElement: doc.documentElement,
rootElement,
};
this._addToJSONProperty(formLike);
return formLike;
},
/**
* Determine the Element that encapsulates the related fields. For example, if
* a page contains a login form and a checkout form which are "submitted"
* separately, and the username field is passed in, ideally this would return
* an ancestor Element of the username and password fields which doesn't
* include any of the checkout fields.
*
* @param {HTMLInputElement} aField - a field in a document
* @return {HTMLElement} - the root element surrounding related fields
*/
findRootForField(aField) {
if (aField.form) {
return aField.form;
}
return aField.ownerDocument.documentElement;
},
/**
* Add a `toJSON` property to a FormLike so logging which ends up going
* through dump doesn't include usless garbage from DOM objects.