var host = window.location.host;
var YCanPDF = null;
var newestVersion = "3.5.5.3";

if (!window.JSON) {
    var JSON = {
        parse: function (s) {
            return eval('(' + s + ')')
        },
        stringify: function (o) {
            function stringifyValue(v) {
                var result = ''
                switch (typeof v) {
                    case 'string':
                        result = '"' + v + '"'
                        break
                    case 'boolean':
                        result = v ? 'true' : 'false'
                        break
                    case 'number':
                        result = '' + v
                        break
                    case 'object':
                        if (v instanceof String) {
                            result = '"' + v + '"'
                        } else if (v instanceof Boolean) {
                            result = v ? 'true' : 'false'
                        } else if (v instanceof Number) {
                            result = '' + v
                        } else {
                            result = JSON.stringify(v)
                        }
                        break
                    case 'undefined':
                        result = 'undefined'
                        break
                    default:
                        break
                }
                return result
            }

            var result = ''
            switch (typeof o) {
                case 'undefined':
                    break
                case 'object':
                    if (Array.isArray(o)) {
                        result += '['
                        var count = o.length
                        for (var i = 0; i < count; ++i) {
                            result += stringifyValue(o[i]) + ', '
                        }
                        result = result.substr(0, result.length - 2)
                        result += ']'
                    } else {
                        result += '{'
                        for (var prop in o) {
                            result += '"' + prop + '": ' + stringifyValue(o[prop]) + ', '
                        }
                        result = result.substr(0, result.length - 2)
                        result += '}'
                    }
                    break
                case 'boolean':
                    break
                case 'number':
                    break
                case 'string':
                    break
                case 'function':
                    break
                default:
                    break
            }
            return result
        }
    }
}

function checkVersion(CurVersion)
{
    var result = false;
    var newV = newestVersion.split('.');
    var curV = CurVersion.split('.');
    if (parseInt(newV[0]) > parseInt(curV[0])) {
        result = true;
    }
    if (parseInt(newV[0]) == parseInt(curV[0]) && parseInt(newV[1]) > parseInt(curV[1])) {
        result = true;
    }
    if (parseInt(newV[0]) == parseInt(curV[0]) && parseInt(newV[1]) == parseInt(curV[1]) && parseInt(newV[2]) > parseInt(curV[2])) {
        result = true;
    }
    if (parseInt(newV[0]) == parseInt(curV[0]) && parseInt(newV[1]) == parseInt(curV[1]) && parseInt(newV[2]) == parseInt(curV[2]) && parseInt(newV[3]) > parseInt(curV[3])) {
        result = true;
    }
    return result
}

function prepareController()
{
    var tips = '';
    if (window.ActiveXObject || 'ActiveXObject' in window) {
        try {
            var Eobj = new ActiveXObject('PDFVIEWYC.PDFViewCtrl.1');
        } catch (e) {
            tips = '您尚未安装PDF控件，点这里进行安装...';
        }
        YCanPDF = document.getElementById('YCanPDFIE');
    } else { //非IE
        var plugin = navigator.plugins['npPDFViewyc dll'];
        if (plugin == undefined) {
            isInstalled = false;
            alert('插件未注册!');
            tips = '您尚未安装PDF控件，点这里进行安装...';
        } else {
            YCanPDF = document.getElementById('YCanPDFNOTIE');
        }
    }
    if (tips == '') {
        var CurVer = YCanPDF.GetVersion();
        if (checkVersion(CurVer)) {
            alert('控件有更新，请下载更新');
            tips = '点这里进行更新安装...';
        }
    }
    if (tips != '') {
        document.getElementById('controlContainer').innerHTML = '<a href="/js/pdf/caPDFPluginInst.exe" class="install">' + tips + '</a>';
    }
}

function f_OnCompleteDrawNote(StrInfoLen, StrInfo)
{
	selectionRegionComplete(StrInfoLen, StrInfo);
}

function f_OnNoteDelete(StrInfoLen, StrInfo) {
    removeRegion(StrInfoLen, StrInfo);
}

function f_OnPageChanged(CurPage, MaxPage) {
	changedPage(CurPage, MaxPage);
}

function OpenURL(link) {
	var n = YCanPDF.SetURL(link, "");
}

function CommentsTools(type) {
	YCanPDF.CommentsTool(type);
}

function doKeyEvent(event)
{
    var event = event ? event : (window.event ? window.event : null);
    var eventCode = event.keyCode;
    
    if(eventCode==39)
    {
    	nextPage(1);
    }
    else if(eventCode==37)
    {
    	nextPage(-1);
    }
}

function getNoteRegionsSingle(CommentIndex)
{
	var CommentInfo  = YCanPDF.getNoteRegions(CommentIndex,"");
	
	return CommentInfo;
}

function f_OnVScrollPagePos(StrInfoLen, StrInfo) {
	scrollPlugin(StrInfo);
}

function scrollPlugin(strInfo)
{
	if(strInfo=="Bootom"){
		var l = document.documentElement.scrollLeft || document.body.scrollLeft;
		var t = document.documentElement.scrollTop || document.body.scrollTop;
		window.scrollTo(l,t+20);
	}
	else if(strInfo=="Top"){
		var l = document.documentElement.scrollLeft || document.body.scrollLeft;
		var t = document.documentElement.scrollTop || document.body.scrollTop;
		window.scrollTo(l,t-20);
	}
}