300 lines
7.7 KiB
JavaScript
300 lines
7.7 KiB
JavaScript
/* based on chromium plugin code, adapted by Nibble<.gs@gmail.com> */
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var hint_num_str = '';
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var hint_elems = [];
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var hint_open_in_new_tab = false;
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var hint_enabled = false;
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function hintMode(newtab){
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hint_enabled = true;
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if (newtab) {
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hint_open_in_new_tab = true;
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} else {
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hint_open_in_new_tab = false;
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}
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setHints();
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document.removeEventListener('keydown', initKeyBind, false);
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document.addEventListener('keydown', hintHandler, false);
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hint_num_str = '';
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}
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function hintHandler(e){
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e.preventDefault(); //Stop Default Event
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var pressedKey = get_key(e);
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if (pressedKey == 'Enter') {
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if (hint_num_str == '')
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hint_num_str = '1';
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judgeHintNum(Number(hint_num_str));
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} else if (/[0-9]/.test(pressedKey) == false) {
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removeHints();
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} else {
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hint_num_str += pressedKey;
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var hint_num = Number(hint_num_str);
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if (hint_num * 10 > hint_elems.length + 1) {
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judgeHintNum(hint_num);
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} else {
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var hint_elem = hint_elems[hint_num - 1];
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if (hint_elem != undefined && hint_elem.tagName.toLowerCase() == 'a') {
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setHighlight(hint_elem, true);
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}
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}
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}
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}
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function setHighlight(elem, is_active) {
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if (is_active) {
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var active_elem = document.body.querySelector('a[highlight=hint_active]');
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if (active_elem != undefined)
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active_elem.setAttribute('highlight', 'hint_elem');
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elem.setAttribute('highlight', 'hint_active');
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} else {
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elem.setAttribute('highlight', 'hint_elem');
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}
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}
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function setHintRules() {
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if (document.styleSheets.length < 1) {
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var style = document.createElement("style");
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style.appendChild(document.createTextNode(""));
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document.head.appendChild(style);
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}
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var ss = document.styleSheets[0];
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ss.insertRule('a[highlight=hint_elem] {background-color: NULL}', 0);
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ss.insertRule('a[highlight=hint_active] {background-color: NULL}', 0);
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}
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function deleteHintRules() {
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var ss = document.styleSheets[0];
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ss.deleteRule(0);
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ss.deleteRule(0);
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}
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function judgeHintNum(hint_num) {
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var hint_elem = hint_elems[hint_num - 1];
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if (hint_elem != undefined) {
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execSelect(hint_elem);
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} else {
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removeHints();
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}
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}
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function execSelect(elem) {
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var tag_name = elem.tagName.toLowerCase();
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var type = elem.type ? elem.type.toLowerCase() : "";
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if (tag_name == 'a' && elem.href != '') {
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setHighlight(elem, true);
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// TODO: ajax, <select>
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if (hint_open_in_new_tab)
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window.open(elem.href);
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else location.href=elem.href;
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var textField = document.createElement("textarea");
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textField.innerText = elem.href
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window.document.body.appendChild(textField);
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textField.select();
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window.document.execCommand("copy");
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textField.remove();
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} else if (tag_name == 'input' && (type == "submit" || type == "button" || type == "reset")) {
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elem.click();
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} else if (tag_name == 'input' && (type == "radio" || type == "checkbox")) {
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// TODO: toggle checkbox
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elem.checked = !elem.checked;
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} else if (tag_name == 'input' || tag_name == 'textarea') {
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elem.focus();
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elem.setSelectionRange(elem.value.length, elem.value.length);
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}
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removeHints();
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}
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function setHints() {
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setHintRules();
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var win_top = window.scrollY;
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var win_bottom = win_top + window.innerHeight;
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var win_left = window.scrollX;
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var win_right = win_left + window.innerWidth;
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// TODO: <area>
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var elems = document.body.querySelectorAll('a, input:not([type=hidden]), textarea, select, button');
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var div = document.createElement('div');
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div.setAttribute('highlight', 'hints');
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document.body.appendChild(div);
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for (var i = 0; i < elems.length; i++) {
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var elem = elems[i];
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if (!isHintDisplay(elem))
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continue;
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var pos = elem.getBoundingClientRect();
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var elem_top = win_top + pos.top;
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var elem_bottom = win_top + pos.bottom;
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var elem_left = win_left + pos.left;
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var elem_right = win_left + pos.left;
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if ( elem_bottom >= win_top && elem_top <= win_bottom) {
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hint_elems.push(elem);
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setHighlight(elem, false);
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var span = document.createElement('span');
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span.style.cssText = [
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'left: ', elem_left, 'px;',
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'top: ', elem_top, 'px;',
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'position: absolute;',
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'font-size: 13px;',
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'background-color: ' + (hint_open_in_new_tab ? '#458588' : '#1d2021') + ';',
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'color: white;',
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'font-weight: bold;',
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'padding: 0px 1px;',
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'z-index: 100000;'
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].join('');
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span.innerHTML = hint_elems.length;
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div.appendChild(span);
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if (elem.tagName.toLowerCase() == 'a') {
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if (hint_elems.length == 1) {
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setHighlight(elem, true);
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} else {
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setHighlight(elem, false);
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}
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}
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}
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}
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}
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function isHintDisplay(elem) {
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var pos = elem.getBoundingClientRect();
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return (pos.height != 0 && pos.width != 0);
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}
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function removeHints() {
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if (!hint_enabled)
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return;
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hint_enabled = false;
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deleteHintRules();
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for (var i = 0; i < hint_elems.length; i++) {
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hint_elems[i].removeAttribute('highlight');
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}
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hint_elems = [];
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hint_num_str = '';
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var div = document.body.querySelector('div[highlight=hints]');
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if (div != undefined) {
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document.body.removeChild(div);
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}
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document.removeEventListener('keydown', hintHandler, false);
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document.addEventListener('keydown', initKeyBind, false);
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}
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function addKeyBind( key, func, eve ){
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var pressedKey = get_key(eve);
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if( pressedKey == key ){
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eve.preventDefault(); //Stop Default Event
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eval(func);
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}
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}
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document.addEventListener( 'keydown', initKeyBind, false );
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function initKeyBind(e){
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var t = e.target;
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if( t.nodeType == 1){
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addKeyBind( 'M-M', 'hintMode()', e );
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addKeyBind( 'M-m', 'hintMode(true)', e );
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addKeyBind( 'M-c', 'removeHints()', e );
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}
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}
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var keyId = {
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"U+0008" : "BackSpace",
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"U+0009" : "Tab",
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"U+0018" : "Cancel",
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"U+001B" : "Esc",
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"U+0020" : "Space",
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"U+0021" : "!",
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"U+0022" : "\"",
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"U+0023" : "#",
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"U+0024" : "$",
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"U+0026" : "&",
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"U+0027" : "'",
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"U+0028" : "(",
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"U+0029" : ")",
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"U+002A" : "*",
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"U+002B" : "+",
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"U+002C" : ",",
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"U+002D" : "-",
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"U+002E" : ".",
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"U+002F" : "/",
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"U+0030" : "0",
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"U+0031" : "1",
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"U+0032" : "2",
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"U+0033" : "3",
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"U+0034" : "4",
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"U+0035" : "5",
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"U+0036" : "6",
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"U+0037" : "7",
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"U+0038" : "8",
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"U+0039" : "9",
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"U+003A" : ":",
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"U+003B" : ";",
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"U+003C" : "<",
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"U+003D" : "=",
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"U+003E" : ">",
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"U+003F" : "?",
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"U+0040" : "@",
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"U+0041" : "a",
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"U+0042" : "b",
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"U+0043" : "c",
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"U+0044" : "d",
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"U+0045" : "e",
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"U+0046" : "f",
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"U+0047" : "g",
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"U+0048" : "h",
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"U+0049" : "i",
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"U+004A" : "j",
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"U+004B" : "k",
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"U+004C" : "l",
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"U+004D" : "m",
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"U+004E" : "n",
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"U+004F" : "o",
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"U+0050" : "p",
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"U+0051" : "q",
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"U+0052" : "r",
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"U+0053" : "s",
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"U+0054" : "t",
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"U+0055" : "u",
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"U+0056" : "v",
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"U+0057" : "w",
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"U+0058" : "x",
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"U+0059" : "y",
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"U+005A" : "z",
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//"U+005B" : "[",
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//"U+005C" : "\\",
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//"U+005D" : "]",
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"U+00DB" : "[",
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"U+00DC" : "\\",
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"U+00DD" : "]",
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"U+005E" : "^",
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"U+005F" : "_",
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"U+0060" : "`",
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"U+007B" : "{",
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"U+007C" : "|",
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"U+007D" : "}",
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"U+007F" : "Delete",
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"U+00A1" : "¡",
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"U+0300" : "CombGrave",
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"U+0300" : "CombAcute",
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"U+0302" : "CombCircum",
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"U+0303" : "CombTilde",
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"U+0304" : "CombMacron",
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"U+0306" : "CombBreve",
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"U+0307" : "CombDot",
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"U+0308" : "CombDiaer",
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"U+030A" : "CombRing",
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"U+030B" : "CombDblAcute",
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"U+030C" : "CombCaron",
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"U+0327" : "CombCedilla",
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"U+0328" : "CombOgonek",
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"U+0345" : "CombYpogeg",
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"U+20AC" : "€",
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"U+3099" : "CombVoice",
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"U+309A" : "CombSVoice",
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}
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function get_key(evt){
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var key = keyId[evt.keyIdentifier] || evt.keyIdentifier,
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ctrl = evt.ctrlKey ? 'C-' : '',
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meta = (evt.metaKey || evt.altKey) ? 'M-' : '',
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shift = evt.shiftKey ? 'S-' : '';
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if (evt.shiftKey){
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if (/^[a-z]$/.test(key))
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return ctrl+meta+key.toUpperCase();
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if (/^[0-9]$/.test(key)) {
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switch(key) {
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// TODO
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case "4":
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key = "$";
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break;
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};
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return key;
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}
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if (/^(Enter|Space|BackSpace|Tab|Esc|Home|End|Left|Right|Up|Down|PageUp|PageDown|F(\d\d?))$/.test(key))
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return ctrl+meta+shift+key;
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}
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return ctrl+meta+key;
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}
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