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// Vimperator plugin: 'Walk Input'
// Last Change: 2008-11-19
// License: BSD
// Version: 1.1
// Maintainer: Takayama Fumihiko <tekezo@pqrs.org>
// ------------------------------------------------------------
// The focus walks <input> & <textarea> elements.
// If you type M-i first, the focus moves to "<input name='search' />".
// Then if you type M-i once more, the focus moves to "<input name='name' />".
//
// <html>
// <input name="search" />
// <a href="xxx">xxx</a>
// <a href="yyy">yyy</a>
// <a href="zzz">zzz</a>
// <input name="name" />
// <textarea name="comment"></textarea>
// </html>
(function () {
var xpath = '//input[@type="text" or @type="password" or @type="search" or not(@type)] | //textarea';
var walkinput = function (forward) {
var focused = document.commandDispatcher.focusedElement;
var current = null;
var next = null;
var prev = null;
var list = [];
(function (frame) {
var doc = frame.document;
if (doc.body.localName.toLowerCase() == 'body') {
let r = doc.evaluate(xpath, doc, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
for (let i = 0, l = r.snapshotLength; i < l; ++i) {
let e = r.snapshotItem(i);
list.push(e);
if (e == focused) {
current = e;
} else if (current && !next) {
next = e;
} else if (!current) {
prev = e;
}
}
}
for (let i = 0; i < frame.frames.length; i++)
arguments.callee(frame.frames[i]);
})(content);
if (list.length <= 0)
return;
var elem = forward ? (next || list[0])
: (prev || list[list.length - 1]);
elem.focus();
};
mappings.addUserMap([modes.NORMAL, modes.INSERT], ['<M-i>', '<A-i>'],
'Walk Input Fields (Forward)', function () walkinput(true));
mappings.addUserMap([modes.NORMAL, modes.INSERT], ['<M-I>', '<A-I>'],
'Walk Input Fields (Backward)', function () walkinput(false));
})();
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