Subversion Repositories Applications.papyrus

/*
        Copyright (c) 2004-2006, The Dojo Foundation
        All Rights Reserved.

        Licensed under the Academic Free License version 2.1 or above OR the
        modified BSD license. For more information on Dojo licensing, see:

                http://dojotoolkit.org/community/licensing.shtml
*/

dojo.provide("dojo.html.metrics");
dojo.require("dojo.html.layout");
dojo.html.getScrollbar = function () {
        var scroll = document.createElement("div");
        scroll.style.width = "100px";
        scroll.style.height = "100px";
        scroll.style.overflow = "scroll";
        scroll.style.position = "absolute";
        scroll.style.top = "-300px";
        scroll.style.left = "0px";
        var test = document.createElement("div");
        test.style.width = "400px";
        test.style.height = "400px";
        scroll.appendChild(test);
        dojo.body().appendChild(scroll);
        var width = scroll.offsetWidth - scroll.clientWidth;
        dojo.body().removeChild(scroll);
        scroll.removeChild(test);
        scroll = test = null;
        return {width:width};
};
dojo.html.getFontMeasurements = function () {
        var heights = {"1em":0, "1ex":0, "100%":0, "12pt":0, "16px":0, "xx-small":0, "x-small":0, "small":0, "medium":0, "large":0, "x-large":0, "xx-large":0};
        if (dojo.render.html.ie) {
                document.documentElement.style.fontSize = "100%";
        }
        var div = document.createElement("div");
        div.style.position = "absolute";
        div.style.left = "-100px";
        div.style.top = "0";
        div.style.width = "30px";
        div.style.height = "1000em";
        div.style.border = "0";
        div.style.margin = "0";
        div.style.padding = "0";
        div.style.outline = "0";
        div.style.lineHeight = "1";
        div.style.overflow = "hidden";
        dojo.body().appendChild(div);
        for (var p in heights) {
                div.style.fontSize = p;
                heights[p] = Math.round(div.offsetHeight * 12 / 16) * 16 / 12 / 1000;
        }
        dojo.body().removeChild(div);
        div = null;
        return heights;
};
dojo.html._fontMeasurements = null;
dojo.html.getCachedFontMeasurements = function (recalculate) {
        if (recalculate || !dojo.html._fontMeasurements) {
                dojo.html._fontMeasurements = dojo.html.getFontMeasurements();
        }
        return dojo.html._fontMeasurements;
};
dojo.html.measureFragment = function (node, html, boxType) {
        var clone = node.cloneNode(true);
        clone.innerHTML = html;
        node.parentNode.appendChild(clone);
        var ret = dojo.html.getElementBox(clone, boxType);
        node.parentNode.removeChild(clone);
        clone = null;
        return ret;
};
dojo.html.getFittedFragment = function (node, html) {
        function cl(node) {
                var element = document.createElement(node.tagName);
                element.id = node.id + "-clone";
                element.className = node.className;
                for (var j = 0; j < node.attributes.length; j++) {
                        if (node.attributes[j].specified) {
                                if (node.attributes[j].nodeName.toLowerCase() != "style" && node.attributes[j].nodeName.toLowerCase() != "edited" && node.attributes[j].nodeName.toLowerCase() != "contenteditable" && node.attributes[j].nodeName.toLowerCase() != "id" && node.attributes[j].nodeName.toLowerCase() != "class") {
                                        element.setAttribute(node.attributes[j].nodeName.toLowerCase(), node.attributes[j].nodeValue);
                                }
                        }
                }
                return element;
        }
        var height = dojo.html.getFontMeasurements()["16px"];
        var n = cl(node);
        n.style.width = dojo.html.getBorderBox(node).width + "px";
        n.style.height = (height + 4) + "px";
        node.parentNode.appendChild(n);
        var rem = dojo.html.fitToElement(n, html);
        var ret = n.innerHTML;
        n.parentNode.removeChild(n);
        return ret;
};
dojo.html.fitToElement = function (node, html) {
        function cl(node) {
                var element = document.createElement(node.tagName);
                element.id = node.id + "-clone";
                element.className = node.className;
                for (var j = 0; j < node.attributes.length; j++) {
                        if (node.attributes[j].specified) {
                                if (node.attributes[j].nodeName.toLowerCase() != "style" && node.attributes[j].nodeName.toLowerCase() != "edited" && node.attributes[j].nodeName.toLowerCase() != "contenteditable" && node.attributes[j].nodeName.toLowerCase() != "id" && node.attributes[j].nodeName.toLowerCase() != "class") {
                                        element.setAttribute(node.attributes[j].nodeName.toLowerCase(), node.attributes[j].nodeValue);
                                }
                        }
                }
                return element;
        }
        var clone = cl(node);
        node.parentNode.appendChild(clone);
        var t = dojo.html.getBorderBox(node);
        clone.style.width = t.width + "px";
        var singletons = ["br", "img", "hr", "input", "!--"];
        var chop = ["<BR>", "<br>", "<br/>", "<br />", "<p></p>", "<P></P>"];
        var openTags = [];
        var str = html;
        var i = 0;
        var limit = str.length;
        var add = 0;
        var doLoop = true;
        clone.innerHTML = str;
        while (doLoop) {
                add = Math.round((limit - i) / 2);
                if (add <= 1) {
                        doLoop = false;
                }
                i += add;
                clone.innerHTML = str.substr(0, i);
                if (clone.offsetHeight > t.height) {
                        limit = i;
                        i -= add;
                }
        }
        if (str.substr(0, i) != str) {
                var lastSpace = str.substr(0, i).lastIndexOf(" ");
                var lastNewLine = str.substr(0, i).lastIndexOf("\n");
                var lastGreater = str.substr(0, i).lastIndexOf(">");
                var lastLess = str.substr(0, i).lastIndexOf("<");
                if (lastLess <= lastGreater && lastNewLine == i - 1) {
                        i = i;
                } else {
                        if (lastSpace != -1 && lastSpace > lastGreater && lastGreater > lastLess) {
                                i = lastSpace + 1;
                        } else {
                                if (lastLess > lastGreater) {
                                        i = lastLess;
                                } else {
                                        if (lastGreater != -1) {
                                                i = lastGreater + 1;
                                        }
                                }
                        }
                }
        }
        str = str.substr(0, i);
        var ret = html.substr(str.length);
        var doPush = true;
        var tags = str.split("<");
        tags.shift();
        for (var j = 0; j < tags.length; j++) {
                tags[j] = tags[j].split(">")[0];
                if (tags[j].charAt(tags[j].length - 1) == "/") {
                        continue;
                }
                if (tags[j].charAt(0) != "/") {
                        for (var k = 0; k < singletons.length; k++) {
                                if (tags[j].split(" ")[0].toLowerCase() == singletons[k]) {
                                        doPush = false;
                                }
                        }
                        if (doPush) {
                                openTags.push(tags[j]);
                        }
                        doPush = true;
                } else {
                        openTags.pop();
                }
        }
        for (var j = 0; j < chop.length; j++) {
                if (ret.charAt(0) == "\n") {
                        ret = ret.substr(1);
                }
                while (ret.indexOf(chop[j]) == 0) {
                        ret = ret.substr(chop[j].length);
                }
        }
        for (var j = openTags.length - 1; j >= 0; j--) {
                if (str.lastIndexOf(openTags[j]) == (str.length - openTags[j].length - 1)) {
                        str = str.substring(0, str.lastIndexOf(openTags[j]));
                } else {
                        str += "</" + openTags[j] + ">";
                }
                if (ret.length > 0) {
                        ret = "<" + openTags[j] + ">" + ret;
                }
        }
        for (var j = 0; j < chop.length; j++) {
                if (ret.charAt(0) == "\n") {
                        ret = ret.substr(1);
                }
                while (ret.indexOf(chop[j]) == 0) {
                        ret = ret.substr(chop[j].length);
                }
        }
        node.innerHTML = str;
        clone.parentNode.removeChild(clone);
        clone = null;
        return ret;
};