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heuristics to avoid duplicate relative hints

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This commit is contained in:
Martin Stubenschrott
2007-09-27 21:06:04 +00:00
parent 39ca50905c
commit 4d48090bd2
2 changed files with 49 additions and 22 deletions
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6
chrome/content/vimperator/buffers.js
View File

@@ -163,12 +163,14 @@ function Buffer() //{{{
this.lastInputField = null; // used to keep track of the right field for "gi"
// returns an XPathResult object
this.evaluateXPath = function(expression, doc, ordered)
this.evaluateXPath = function(expression, doc, elem, ordered)
{
if (!doc)
doc = window.content.document;
if (!elem)
elem = doc;
var result = doc.evaluate(expression, doc,
var result = doc.evaluate(expression, elem,
function lookupNamespaceURI(prefix) {
switch (prefix) {
case 'xhtml':

65
chrome/content/vimperator/hints.js
View File

@@ -711,7 +711,7 @@ function Hints() //{{{
if (!takenHints)
takenHints = {};
var rel = 0, abs = 0, inl = 0;
var rel = 0, abs = 0, inl = 0, disc = 0;
var nextHintFirstChar = 0, nextHintSecondChar = 0;
var finder = Components.classes["@mozilla.org/embedcomp/rangefind;1"]
@@ -724,18 +724,17 @@ function Hints() //{{{
baseNodeInline.style.color = "black";
baseNodeInline.style.display = "inline";
baseNodeInline.style.fontSize = "inherit";
baseNodeInline.style.padding = "0";
baseNodeInline.style.padding = "0px";
baseNodeInline.className = "vimperator-hint-inline";
var baseNodeAbsolute = doc.createElementNS("http://www.w3.org/1999/xhtml", "span");
//baseNodeAbsolute.style.backgroundColor = "#BCEE68";
baseNodeAbsolute.style.backgroundColor = "cyan";
baseNodeAbsolute.style.color = "black";
baseNodeAbsolute.style.position = "absolute";
baseNodeAbsolute.style.fontSize = "9px";
baseNodeAbsolute.style.fontSize = "10px";
baseNodeAbsolute.style.fontWeight = "bold";
//baseNodeAbsolute.style.fontFamily = "monospace";
baseNodeAbsolute.style.lineHeight = "9px";
baseNodeAbsolute.style.padding = "0px 1px 0px 1px";
baseNodeAbsolute.style.lineHeight = "10px";
baseNodeAbsolute.style.padding = "0px 1px 0px 0px";
baseNodeAbsolute.style.zIndex = "5000";
baseNodeAbsolute.className = "vimperator-hint-absolute";
@@ -745,8 +744,8 @@ function Hints() //{{{
var retRange = null;
var searchRange = doc.createRange();
var res = vimperator.buffer.evaluateXPath(vimperator.options["hinttags"], doc);
var word, elem, count, href, text, lowertext;
var res = vimperator.buffer.evaluateXPath(vimperator.options["hinttags"], doc, null, true);
var word, elem, tagname, count, href, text, lowertext;
vimperator.log("Hinting " + res.snapshotLength + " items on " + doc.title);
outer:
for (var i = 0; i < res.snapshotLength; i++)
@@ -756,7 +755,7 @@ outer:
if (i % 200 == 0)
{
Components.classes['@mozilla.org/thread-manager;1'].
getService().mainThread.processNextEvent(true);
getService().mainThread.processNextEvent(false);
// update saved positions, as the user could have scrolled
scrollX = doc.defaultView.scrollX;
@@ -765,12 +764,24 @@ outer:
}
elem = res.snapshotItem(i);
tagname = elem.tagName.toLowerCase();
//if (vimperator.buffer.evaluateXPath(".//*[@class='vimperator-hint-inline']", doc, elem).snapshotLength > 0 )
// continue outer;
if (elem.getElementsByClassName("vimperator-hint-inline").length > 0)
continue outer;
count = elem.childNodes.length;
searchRange.setStart(elem, 0);
searchRange.setEnd(elem, count);
// try to get a unique substring of the element
text = elem.textContent; // faster than searchRange.toString()
if (tagname == "input" || tagname == "textarea" || tagname == "select")
text = "";
else
text = elem.textContent; // faster than searchRange.toString()
href = elem.getAttribute("href");
for (var j = 0; j < text.length - 1; j++)
{
@@ -782,9 +793,11 @@ outer:
if (/[^a-z0-9]/.test(lowertext)) // 2x as fast as lowertext[0] > "a" etc. testing
continue;
if (typeof(takenHints[lowertext]) === "undefined" ||
(href && takenHints[lowertext] == href))
{ // hint not yet taken or taken and href the same
//dump(elem.tagname + " - " + text + ": " + word + "\n");
// hint not yet taken or taken and href the same
if (typeof(takenHints[lowertext]) === "undefined" || (href && takenHints[lowertext] == href))
{
takenHints[lowertext] = href;
inl++;
@@ -805,14 +818,27 @@ outer:
}
// if we came here, there was no suitable inline hint, need
// to create an absolutely positioned div
var lower = elem.tagName.toLowerCase();
if (lower != "input" && lower != "textarea" && lower != "select")
// to create an span relatively positioned to the element
if (tagname != "input" && tagname != "textarea" && tagname != "select")
{
// heuristics to avoid duplicate relative hints for the same things:
// 1. a link with the same href in one of the next two elements
// this often is true for images which have a textlink right to it
// or a menu made up of a <td>
if (i < res.snapshotLength-2)
{
if (href && href == res.snapshotItem(i+1).getAttribute("href") ||
href == res.snapshotItem(i+2).getAttribute("href"))
{
disc++;
continue;
}
}
elem.style.position = "relative";
rel++;
var span = doc.createElement("span");
span.setAttribute("style", "z-index: 5000; color:black; font-weight: bold; font-size: 9px; background-color:yellow; line-height: 9px; border: 0px; padding: 0px 1px 0px 1px; position: absolute; left: 0px; top: 0px");
span.setAttribute("style", "z-index: 5000; color:black; font-weight: bold; font-size: 10px; background-color:yellow; line-height: 10px; border: 0px; padding: 0px 1px 0px 0px; position: absolute; left: 0px; top: 0px");
var hint = getNextHintText(href);
if (!hint)
return false;
@@ -821,7 +847,7 @@ outer:
elem.appendChild(span);
continue;
}
else
else // absolute positioning
{
var rect = elem.getClientRects()[0];
if (rect)
@@ -838,8 +864,7 @@ outer:
}
}
}
vimperator.log("Done hinting " + res.snapshotLength + " items on " + doc.title);
vimperator.log("REL: " + rel + " - ABS: " + abs + " - INL: " + inl);
vimperator.log("Hinted " + res.snapshotLength + " items on " + doc.title + " - inl: " + inl+ " rel: " + rel + " abs: " + abs + " discard: " + disc, 7);
return true;
}