CubicWeb.require('python.js');

/* returns the document's baseURI. (baseuri() uses document.baseURI if

 * available and inspects the <base> tag manually otherwise.)

*/

function baseuri() {

    var uri = document.baseURI;

    if (uri) { // some browsers don't define baseURI

	return uri;

    }

    var basetags = document.getElementsByTagName('base');

    if (basetags.length) {

	return getNodeAttribute(basetags[0], 'href');

    }

    return '';

}

function insertText(text, areaId) {

    var textarea = jQuery('#' + areaId);

    if (document.selection) { // IE

        var selLength;

        textarea.focus();

        sel = document.selection.createRange();

        selLength = sel.text.length;

        sel.text = text;

        sel.moveStart('character', selLength-text.length);

        sel.select();

    } else if (textarea.selectionStart || textarea.selectionStart == '0') { // mozilla

        var startPos = textarea.selectionStart;

        var endPos = textarea.selectionEnd;

	// insert text so that it replaces the [startPos, endPos] part

        textarea.value = textarea.value.substring(0,startPos) + text + textarea.value.substring(endPos,textarea.value.length);

	// set cursor pos at the end of the inserted text

        textarea.selectionStart = textarea.selectionEnd = startPos+text.length;

        textarea.focus();

    } else { // safety belt for other browsers

        textarea.value += text;

    }

}

/* taken from dojo toolkit */

function setCaretPos(element, start, end){

    if(!end){ end = element.value.length; }  // NOTE: Strange - should be able to put caret at start of text?

    // Mozilla

    // parts borrowed from http://www.faqts.com/knowledge_base/view.phtml/aid/13562/fid/130

    if(element.setSelectionRange){

        element.focus();

        element.setSelectionRange(start, end);

    } else if(element.createTextRange){ // IE

        var range = element.createTextRange();

        with(range){

            collapse(true);

            moveEnd('character', end);

            moveStart('character', start);

            select();

        }

    } else { //otherwise try the event-creation hack (our own invention)

        // do we need these?

        element.value = element.value;

        element.blur();

        element.focus();

        // figure out how far back to go

        var dist = parseInt(element.value.length)-end;

        var tchar = String.fromCharCode(37);

        var tcc = tchar.charCodeAt(0);

        for(var x = 0; x < dist; x++){

            var te = document.createEvent("KeyEvents");

            te.initKeyEvent("keypress", true, true, null, false, false, false, false, tcc, tcc);

            element.dispatchEvent(te);

        }

    }

}

function setProgressMessage(label) {

    var body = document.getElementsByTagName('body')[0];

    body.appendChild(DIV({id: 'progress'}, label));

    jQuery('#progress').show();

}

function resetProgressMessage() {

    var body = document.getElementsByTagName('body')[0];

    jQuery('#progress').hide();

}

/* set body's cursor to 'progress'

 */

function setProgressCursor() {

    var body = document.getElementsByTagName('body')[0];

    body.style.cursor = 'progress';

}

/*

 * reset body's cursor to default (mouse cursor). The main

 * purpose of this function is to be used as a callback in the

 * deferreds' callbacks chain.

 */

function resetCursor(result) {

    var body = document.getElementsByTagName('body')[0];

    body.style.cursor = 'default';

    // pass result to next callback in the callback chain

    return result;

}

function updateMessage(msg) {

    var msgdiv = DIV({'class':'message'});

    // don't pass msg to DIV() directly because DIV will html escape it

    // and msg should alreay be html escaped at this point.

    msgdiv.innerHTML = msg;

    jQuery('#appMsg').removeClass('hidden').empty().append(msgdiv);

}

/* builds an url from an object (used as a dictionnary)

 * Notable difference with MochiKit's queryString: as_url does not

 * *url_quote* each value found in the dictionnary

 * >>> as_url({'rql' : "RQL", 'x': [1, 2], 'itemvid' : "oneline"})

 * rql=RQL&vid=list&itemvid=oneline&x=1&x=2

 */

function as_url(props) {

    var chunks = [];

    for(key in props) {

	var value = props[key];

	// generate a list of couple key=value if key is multivalued

	if (isArrayLike(value)) {

	    for (var i=0; i<value.length;i++) {

		chunks.push(key + '=' + value[i]);

	    }

	} else {

	    chunks.push(key + '=' + value);

	}

    }

    return chunks.join('&');

}

 */

function firstSelected(selectNode) {

    var selection = filter(attrgetter('selected'), selectNode.options);

    return (selection.length>0) ? getNodeAttribute(selection[0], 'value'):null;

}

/* toggle visibility of an element by its id

 */

function toggleVisibility(elemId) {

    jqNode(elemId).toggleClass('hidden');

}

/*

 * return true (resp. false) if <element> (resp. doesn't) matches <properties>

 */

function elementMatches(properties, element) {

    for (prop in properties) {

	if (getNodeAttribute(element, prop) != properties[prop]) {

	    return false;

	}

    }

    return true;

}

/* returns the list of elements in the document matching the tag name

 * and the properties provided

 * @param tagName the tag's name

 * @param properties a js Object used as a dict

 * @return an iterator (if a *real* array is needed, you can use the

 *                      list() function)

 */

function getElementsMatching(tagName, properties, /* optional */ parent) {

    var filterfunc = partial(elementMatches, properties);

    parent = parent || document;

    return filter(filterfunc, parent.getElementsByTagName(tagName));

}

/*

 */

function setCheckboxesState(nameprefix, checked){

    // XXX: this looks in *all* the document for inputs

    var elements = getElementsMatching('input', {'type': "checkbox"});

    filterfunc = function(cb) { return nameprefix && cb.name.startsWith(nameprefix); };

    forEach(filter(filterfunc, elements), function(cb) {cb.checked=checked;});

}

function setCheckboxesState2(nameprefix, value, checked){

    // XXX: this looks in *all* the document for inputs

    var elements = getElementsMatching('input', {'type': "checkbox"});

    filterfunc = function(cb) { return nameprefix && cb.name.startsWith(nameprefix) && cb.value == value; };

    forEach(filter(filterfunc, elements), function(cb) {cb.checked=checked;});

}

/*

 * centers an HTML element on the screen

 */

function centerElement(obj){

    var vpDim = getViewportDimensions();

    var elemDim = getElementDimensions(obj);

    setElementPosition(obj, {'x':((vpDim.w - elemDim.w)/2),

			     'y':((vpDim.h - elemDim.h)/2)});

}

/* this function is a hack to build a dom node from html source */

function html2dom(source) {

    var tmpNode = SPAN();

    tmpNode.innerHTML = source;

    if (tmpNode.childNodes.length == 1) {

	return tmpNode.firstChild;

    }

    else {

	// we leave the span node when `source` has no root node

	// XXX This is cleary not the best solution, but css/html-wise,

	///    a span not should not be too  much disturbing

	return tmpNode;

    }

}

// *** HELPERS **************************************************** //

function rql_for_eid(eid) { return 'Any X WHERE X eid ' + eid; }

function isTextNode(domNode) { return domNode.nodeType == 3; }

function isElementNode(domNode) { return domNode.nodeType == 1; }

function changeLinkText(link, newText) {

    jQuery(link).text(newText);

//    for (var i=0; i<link.childNodes.length; i++) {

//	var node = link.childNodes[i];

//	if (isTextNode(node)) {

//	    swapDOM(node, document.createTextNode(newText));

//	    break;

//	}

//    }

}

function autogrow(area) {

    if (area.scrollHeight > area.clientHeight && !window.opera) {

	if (area.rows < 20) {

	    area.rows += 2;

	}

    }

}

//============= page loading events ==========================================//

function roundedCornersOnLoad() {

    roundClass("th", "month", {corners: "top",  compact:true});

}

CubicWeb.provide('htmlhelpers.js');