2 (c) 2009 by Leon Winter
3 (c) 2009, 2010 by Hannes Schueller
4 (c) 2010 by Hans-Peter Deifel
5 (c) 2011 by Daniel Carl
11 hintCss: "z-index:100000;font-family:monospace;font-size:10px;"
12 + "font-weight:bold;color:white;background-color:red;"
13 + "padding:0px 1px;position:absolute;",
14 hintClass: "hinting_mode_hint",
15 hintClassFocus: "hinting_mode_hint_focus",
16 elemBackground: "#ff0",
17 elemBackgroundFocus: "#8f0",
22 var currentFocusNum = 1;
26 this.createHints = function(inputText, hintMode)
33 var top_height = topwin.innerHeight;
34 var top_width = topwin.innerWidth;
40 function helper (win, offsetX, offsetY) {
41 var doc = win.document;
43 var win_height = win.height;
44 var win_width = win.width;
47 var minX = offsetX < 0 ? -offsetX : 0;
48 var minY = offsetY < 0 ? -offsetY : 0;
49 var maxX = offsetX + win_width > top_width ? top_width - offsetX : top_width;
50 var maxY = offsetY + win_height > top_height ? top_height - offsetY : top_height;
52 var scrollX = win.scrollX;
53 var scrollY = win.scrollY;
55 hintContainer = doc.createElement("div");
56 hintContainer.id = "hint_container";
58 xpath_expr = _getXpathXpression(inputText);
60 var res = doc.evaluate(xpath_expr, doc,
62 return "http://www.w3.org/1999/xhtml";
63 }, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
65 /* generate basic hint element which will be cloned and updated later */
66 var hintSpan = doc.createElement("span");
67 hintSpan.setAttribute("class", config.hintClass);
68 hintSpan.style.cssText = config.hintCss;
70 /* due to the different XPath result type, we will need two counter variables */
71 var rect, elem, text, node, show_text;
72 for (var i = 0; i < res.snapshotLength; i++)
74 if (hintCount >= config.maxAllowedHints)
77 elem = res.snapshotItem(i);
78 rect = elem.getBoundingClientRect();
79 if (!rect || rect.left > maxX || rect.right < minX || rect.top > maxY || rect.bottom < minY)
82 var style = topwin.getComputedStyle(elem, "");
83 if (style.display == "none" || style.visibility != "visible")
86 var leftpos = Math.max((rect.left + scrollX), scrollX);
87 var toppos = Math.max((rect.top + scrollY), scrollY);
89 /* making this block DOM compliant */
90 var hint = hintSpan.cloneNode(false);
91 hint.setAttribute("id", "vimprobablehint" + hintCount);
92 hint.style.left = leftpos + "px";
93 hint.style.top = toppos + "px";
94 text = doc.createTextNode(hintCount + 1);
95 hint.appendChild(text);
97 hintContainer.appendChild(hint);
103 background: elem.style.background,
104 foreground: elem.style.color}
107 /* make the link black to ensure it's readable */
108 elem.style.color = config.elemColor;
109 elem.style.background = config.elemBackground;
112 doc.documentElement.appendChild(hintContainer);
114 /* recurse into any iframe or frame element */
115 var frameTags = ["frame","iframe"];
116 for (var f = 0; f < frameTags.length; ++f) {
117 var frames = doc.getElementsByTagName(frameTags[f]);
118 for (var i = 0, nframes = frames.length; i < nframes; ++i) {
120 rect = elem.getBoundingClientRect();
121 if (!elem.contentWindow || !rect || rect.left > maxX || rect.right < minX || rect.top > maxY || rect.bottom < minY)
123 helper(elem.contentWindow, offsetX + rect.left, offsetY + rect.top);
128 helper(topwin, 0, 0);
132 if (hintCount == 1) {
133 /* just one hinted element - might as well follow it */
138 /* set focus on hint with given number */
139 this.focusHint = function(n)
141 /* reset previous focused hint */
142 var hint = _getHintByNumber(currentFocusNum);
144 hint.elem.className = hint.elem.className.replace(config.hintClassFocus, config.hintClass);
145 hint.elem.style.background = config.elemBackground;
150 /* mark new hint as focused */
151 var hint = _getHintByNumber(currentFocusNum);
153 hint.elem.className = hint.elem.className.replace(config.hintClass, config.hintClassFocus);
154 hint.elem.style.background = config.elemBackgroundFocus;
158 /* set focus to next avaiable hint */
159 this.focusNextHint = function()
161 var index = _getHintIdByNumber(currentFocusNum);
163 if (typeof(hints[index + 1]) != "undefined") {
164 this.focusHint(hints[index + 1].number);
166 this.focusHint(hints[0].number);
170 /* set focus to previous avaiable hint */
171 this.focusPreviousHint = function()
173 var index = _getHintIdByNumber(currentFocusNum);
174 if (index != 0 && typeof(hints[index - 1].number) != "undefined") {
175 this.focusHint(hints[index - 1].number);
177 this.focusHint(hints[hints.length - 1].number);
181 /* filters hints matching given number */
182 this.updateHints = function(n)
185 return this.createHints();
187 /* remove none matching hints */
189 for (var i = 0; i < hints.length; ++i) {
191 if (0 != hint.number.toString().indexOf(n.toString())) {
192 remove.push(hint.number);
196 for (var i = 0; i < remove.length; ++i) {
197 _removeHint(remove[i]);
200 if (hints.length === 1) {
201 return this.fire(hints[0].number);
203 return this.focusHint(n);
207 this.clearFocus = function()
209 if (document.activeElement && document.activeElement.blur) {
210 document.activeElement.blur();
214 /* remove all hints and set previous style to them */
215 this.clearHints = function()
217 if (hints.length == 0) {
220 for (var i = 0; i < hints.length; ++i) {
222 if (typeof(hint.elem) != "undefined") {
223 hint.elem.style.background = hint.background;
224 hint.elem.style.color = hint.foreground;
225 hint.span.parentNode.removeChild(hint.span);
229 hintContainer.parentNode.removeChild(hintContainer);
230 window.onkeyup = null;
233 /* fires the modeevent on hint with given number */
234 this.fire = function(n)
238 var n = currentFocusNum;
240 var hint = _getHintByNumber(n);
241 if (typeof(hint.elem) == "undefined")
245 var tag = el.nodeName.toLowerCase();
249 if (tag == "iframe" || tag == "frame" || tag == "textarea" || tag == "input" && (el.type == "text" || el.type == "password" || el.type == "checkbox" || el.type == "radio") || tag == "select") {
251 if (tag == "input" || tag == "textarea") {
259 case "f": case "i": result = _open(el); break;
260 case "F": case "I": result = _openNewWindow(el); break;
261 case "s": result = "save;" + _getElemtSource(el); break;
262 case "y": result = "yank;" + _getElemtSource(el); break;
263 case "O": result = "colon;" + _getElemtSource(el); break;
264 default: result = _getElemtSource(el);
270 this.focusInput = function()
272 if (document.getElementsByTagName("body")[0] === null || typeof(document.getElementsByTagName("body")[0]) != "object")
275 /* prefixing html: will result in namespace error */
276 var hinttags = "//input[@type='text'] | //input[@type='password'] | //textarea";
277 var r = document.evaluate(hinttags, document,
279 return "http://www.w3.org/1999/xhtml";
280 }, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
285 for (i = 0; i < r.snapshotLength; i++) {
286 var elem = r.snapshotItem(i);
288 if (elem.style.display != "none" && elem.style.visibility != "hidden") {
294 if (j == 1 && elem.style.display != "none" && elem.style.visibility != "hidden") {
296 var tag = elem.nodeName.toLowerCase();
297 if (tag == "textarea" || tag == "input") {
302 if (elem == document.activeElement) {
307 /* no appropriate field found focused - focus the first one */
308 if (j == 0 && first !== null) {
310 var tag = elem.nodeName.toLowerCase();
311 if (tag == "textarea" || tag == "input") {
317 /* retrieves text content fro given element */
318 function _getTextFromElement(el)
320 if (el instanceof HTMLInputElement || el instanceof HTMLTextAreaElement) {
322 } else if (el instanceof HTMLSelectElement) {
323 if (el.selectedIndex >= 0) {
324 text = el.item(el.selectedIndex).text;
329 text = el.textContent;
331 return text.toLowerCase();;
334 /* retrieves the hint for given hint number */
335 function _getHintByNumber(n)
337 var index = _getHintIdByNumber(n);
338 if (index !== null) {
344 /* retrieves the id of hint with given number */
345 function _getHintIdByNumber(n)
347 for (var i = 0; i < hints.length; ++i) {
349 if (hint.number === n) {
356 /* removes hint with given number from hints array */
357 function _removeHint(n)
359 var index = _getHintIdByNumber(n);
360 if (index === null) {
363 var hint = hints[index];
364 if (hint.number === n) {
365 hint.elem.style.background = hint.background;
366 hint.elem.style.color = hint.foreground;
367 hint.span.parentNode.removeChild(hint.span);
369 /* remove hints from all hints */
370 hints.splice(index, 1);
374 /* opens given element */
377 if (elem.target == "_blank") {
378 elem.removeAttribute("target");
384 /* opens given element into new window */
385 function _openNewWindow(elem)
387 var oldTarget = elem.target;
389 /* set target to open in new window */
390 elem.target = "_blank";
392 elem.target = oldTarget;
397 /* fire moudedown and click event on given element */
398 function _clickElement(elem)
400 doc = elem.ownerDocument;
401 view = elem.contentWindow;
403 var evObj = doc.createEvent("MouseEvents");
404 evObj.initMouseEvent("mousedown", true, true, view, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, null);
405 elem.dispatchEvent(evObj);
407 var evObj = doc.createEvent("MouseEvents");
408 evObj.initMouseEvent("click", true, true, view, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, null);
409 elem.dispatchEvent(evObj);
412 /* retrieves the url of given element */
413 function _getElemtSource(elem)
415 var url = elem.href || elem.src;
419 /* retrieves the xpath expression according to mode */
420 function _getXpathXpression(text)
423 if (typeof(text) == "undefined") {
430 expr = "//*[@onclick or @onmouseover or @onmousedown or @onmouseup or @oncommand or @class='lk' or @role='link' or @href] | //input[not(@type='hidden')] | //a[href] | //area | //textarea | //button | //select";
432 expr = "//*[(@onclick or @onmouseover or @onmousedown or @onmouseup or @oncommand or @class='lk' or @role='link' or @href) and contains(., '" + text + "')] | //input[not(@type='hidden') and contains(., '" + text + "')] | //a[@href and contains(., '" + text + "')] | //area[contains(., '" + text + "')] | //textarea[contains(., '" + text + "')] | //button[contains(@value, '" + text + "')] | //select[contains(., '" + text + "')]";
438 expr = "//img[@src]";
440 expr = "//img[@src and contains(., '" + text + "')]";
445 expr = "//*[@role='link' or @href] | //a[href] | //area | //img[not(ancestor::a)]";
447 expr = "//*[(@role='link' or @href) and contains(., '" + text + "')] | //a[@href and contains(., '" + text + "')] | //area[contains(., '" + text + "')] | //img[not(ancestor::a) and contains(., '" + text + "')]";