Inventitech/AbstractFormatter

/*  Copyright (C) 2014  Moritz Beller

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>. */

// This files contains helper functions that deal with the HTML.

// global html setup
// activate auto-resizing of textarea
$(document).ready(function() {
    $('#abstractTextarea').autosize();
});

// refreshes Abstract and sentiment score on textarea change
$('#abstractTextarea').bind('input propertychange', function() {
    refreshPreparedAbstract();
});

var refreshPreparedAbstract = function() {
    var inputText = $('#abstractTextarea').val();
    var processedText = formatText(inputText);
    $('#formattedAbstract').html(processedText);
    refreshSentimentScore();
 };

var refreshSentimentScore = function() {
    colorizedText = displayAndCalculateAffin($('#formattedAbstract').text(), $('#formattedAbstract').html());
    $('#formattedAbstract').html(colorizedText);
}

var clearAbstract = function() {
    $('#abstractTextarea').val('').trigger('autosize.resize');
    refreshPreparedAbstract();
    $('#formattedAbstract').text('Your formatted abstract from the PDF or LaTeX source!');
 };

// Function for dynamic dispatching of toggle text
collapsed = true;
var toggleCollapse = function() {
    collapsed = !collapsed;
    if (collapsed === true) {
        $('#collapseButton').html('Learn more &raquo;');
    } else {
        $('#collapseButton').html('&laquo; Learn less');
    }
};

// Get HTML parameters 
// this function is copied from http://stackoverflow.com/questions/19491336/get-url-parameter-jquery
function getUrlParameter(sParam)
{
    var sPageURL = window.location.search.substring(1);
    var sURLVariables = sPageURL.split('&');
    for (var i = 0; i < sURLVariables.length; i++) 
    {
        var sParameterName = sURLVariables[i].split('=');
        if (sParameterName[0] == sParam) 
        {
            return sParameterName[1];
        }
    }
}          

// auto-sets the raw text
// so that others can call the AbstractFormatter directly
function formatAbstractFromURL() 
{
    var suppliedText = decodeURI(getUrlParameter('abstract'));
    if(suppliedText && suppliedText != 'undefined') 
    {
        $('#abstractTextarea').val(suppliedText);
    refreshPreparedAbstract();
    }
}

// Used for the selection/hover effect of the prepared abstract
// this function is copied from http://jsfiddle.net/edelman/KcX6A/1506/
jQuery.fn.selectText = function() {
    var doc = document
, element = this[0]
        , range, selection;

    if (doc.body.createTextRange) {
        range = document.body.createTextRange();
        range.moveToElementText(element);
        range.select();
    } else if (window.getSelection) {
        selection = window.getSelection();
        range = document.createRange();
        range.selectNodeContents(element);
        selection.removeAllRanges();
        selection.addRange(range);
    }
};

// called when JS is initialized
$(function() {
    $('#prepared').click(function() {
        $('#formattedAbstract').selectText();
    });
    formatAbstractFromURL();
});

$('#prepared').hover(
       function() { $('#formattedAbstract').addClass('active'); },
       function() { $('#formattedAbstract').removeClass('active'); }
);

// Adds a generic info message in the infoMessages div in the HTML. Returns the number of instances.
var addInfoMessage = function(divId, divClasses, message) {
    var numberOfInfoMessages = $('#' + divId).length;
    if (numberOfInfoMessages === 0) {
        var insertedDiv = '<div id="' + divId + '" class="' + divClasses + '">' + message + '</div>';
        if (divClasses.indexOf('danger') > -1) {
            $('#dangerMessages').append(insertedDiv);
        } else if (divClasses.indexOf('warning') > -1) {
            $('#warningMessages').append(insertedDiv);
        } else {
            $('#infoMessages').append(insertedDiv);
        }
    }
    return numberOfInfoMessages;
};

// removes warning
var removeInfoMessage = function(divId) {
    $('#' + divId).remove();
};