<!doctype html>
<html lang="en-us">
  <head>
    <meta charset="utf-8"/>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title>newLISP in a browser</title>
<!-- codemirror stuff -->
    <link rel=stylesheet href="codemirror/lib/codemirror.css">
    <link rel=stylesheet href="codemirror/addon/dialog/dialog.css"> 
    <link rel="stylesheet" href="codemirror/theme/newlisp.css">
    <link rel="stylesheet" href="codemirror/theme/lesser-dark.css">
    <link rel="stylesheet" href="codemirror/theme/solarized.css">
    <link rel="stylesheet" href="codemirror/theme/ambiance.css">
    <link rel="stylesheet" href="codemirror/theme/xq-light.css">
    <link rel="stylesheet" href="codemirror/theme/no-color.css">
    <script src="codemirror/lib/codemirror.js"></script>
<!-- does not work, don't know why, not caused by newlisp-keymap.js
    <script src="codemirror/dialog/dialog.js"></script>
    <script src="codemirror/search/searchcursor.js"></script>
    <script src="codemirror/search/search.js"></script>
-->
    <script src="codemirror/keymap/newlisp-keymap.js"></script>
    <script src="codemirror/mode/newlisp/newlisp.js"></script>
    <script src="codemirror/addon/selection/active-line.js"></script>
    <script src="codemirror/addon/edit/closebrackets.js"></script>
    <script src="codemirror/addon/edit/matchbrackets.js"></script>
    <style title="cm-main-style">
    .CodeMirror { height: 540px; }
    .CodeMirror { border: 1px solid #AAA; margin-bottom: 5px; border-radius: 5px;}
    .CodeMirror pre { padding-left: 7px; line-height: 1.25; }
    .CodeMirror-scroll { overflow: scroll; }
    </style>
<!-- end codemirror stuff -->
    <style type="text/css" media="screen">
    .emscripten {
        padding-right: 0; margin-left: auto; margin-right: auto; display: block;
        }
    .button {
        color: #000000;
        background-color: #B0B0B0;
        font-size: 1.0em;
        border: 0px;
        border-radius: 5px;
        right: 0px;
        padding-left: 6px;
        padding-right: 6px;
        margin-top: 3px;
        margin-bottom: 4px;
        }
    .blue-button {
        color: #0000AA;
        background-color: #B0B0B0;
        font-size: 1.0em;
        border: 0px;
        border-radius: 5px;
        padding-left: 6px;
        padding-right: 6px;
        margin-top: 3px;
        margin-bottom: 4px;
        }
    .red-button {
        color: #AA0000;
        background-color: #B0B0B0;
        font-size: 1.0em;
        border: 0px;
        border-radius: 5px;
        padding-left: 6px;
        padding-right: 6px;
        margin-top: 3px;
        margin-bottom: 4px;
        }
    .filesbutton {
        color: #000000;
        font-size: 0.1em;
        margin-bottom: 2px;
        opacity: 0.0;
        }
    .keyword {
        font-family: Helvetica, sans-serif;
        font-size: 1.0em;
        color: #000000;
        background-color: #E0E0E0;
        border: 2px solid #5080B0;
        border-radius: 5px;
        margin-right: 0px;
        }
    .menu {
        margin-top: 6px;
        margin-left: 1%;
        margin-bottom: 2px;
        }
    body, p {
        font-family: Helvetica, sans-serif;
        color: #C0C0C0;
        }
    body {
        overflow:hidden;
        background-color: #7080B0;
        margin: 0;
        padding: 0;
        }
    a {
        background-color: transparent;
        color: #c0c0c0;
        text-decoration: underline;
        }

    </style>
    <style name="layout-style">
    .left {
        margin-left: 1%;
        margin-bottom: 2px;
        float: left;
        }
    .right {
        margin-left: 1%;
        margin-bottom: 2px;
        float: left;
        }
    .upper {
        position: relative;
        margin-left: 1%;
        margin-right: 1%;
        margin-bottom: 2px;
        }
    .lower {
        position: relative;
        margin-left: 1%;
        margin-right: 1%;
        margin-bottom: 2px;
        }
     </style>
    <script language="Javascript">
<!--
        var editor = false;
        var cmlog = false;

        // globalarray for width percentages editor and log in 3 layouts
        var LayoutWidth = [["48.5%", "48.5%"],["65%", "32%"], ["97%", "97%"]];
        var LayoutClass = [["left", "right"],["left","right"], ["upper", "lower"]];
        var LayoutIdx = 0;

        // these two functions must be in all 'newLISP in a browser' apps
        function displayHTML(content) { 
              document.write(content); document.close(); 
              return content.length;
              }
        function displayHTMLnew(content) { 
              var newWindow = window.open('');
              newWindow.document.write(content); newWindow.document.close();
              return content.length;
              }

        // the following functions are specific to the editor IDE application
         var isMobile = {
            Android: function() { return navigator.userAgent.match(/Android/i);},
            iOS: function() { return navigator.userAgent.match(/iPhone|iPad|iPod/i);},
            Windows: function() { return navigator.userAgent.match(/IEMobile/i);},
            any: function() { return (isMobile.Android() || isMobile.iOS() || isMobile.Windows());}
            };
        
         function detectIPadOrientation () {
            resizeTextarea();
            window.scrollTo(0, 0);
            //if ( orientation == 0 ) { alert ('Portrait Mode, Home Button bottom');
            }

        function writeLog(content) {
            cmlog.setValue(cmlog.getValue() + content + "\n");
            cmlog.setCursor(99999, 0);
            }

        function evaluateInput() {
            var result = newlispEvalStr(' ' + editor.getValue());
            writeLog(result);
            flashBackground(300);
            if(!isMobile.any()) editor.focus();
            }

        function evaluateInputSilent() {
            var result = newlispEvalStr('(silent)' + editor.getValue());
            writeLog(result);
            flashBackground(300);
            if(!isMobile.any()) editor.focus();
            }

        function evaluateInputJS() {
            var result = newlispEvalStr ('(eval-string-js {' + editor.getValue() + '})');
            writeLog(result);
            editor.setOption("mode", "text/html");
            flashBackground(300);
            if(!isMobile.any()) editor.focus();
            }

        function reload() {
            location.reload();
            }

        function clearEditor() {
            editor.setValue('');
            if(!isMobile.any()) editor.focus();
            editor.setCursor(0, 0);
            }

        function clearLog() {
            cmlog.setValue('');
            if(!isMobile.any()) editor.focus();
            }

        function clearAll() {
            editor.setValue('');
            cmlog.setValue('');
            document.getElementById('keywordtext').value = '';
            if(!isMobile.any()) editor.focus();
            editor.setCursor(0, 0);
            }

        function switchLayout() {
            LayoutIdx = (LayoutIdx += 1) % 3;
            resizeTextarea();
            if(!isMobile.any()) editor.focus();
            }

        function openFile() {
            document.getElementById('files').click();
            }

        function lineNumbers() {
            editor.setOption('lineNumbers', editor.getOption('lineNumbers') == false);
            if(!isMobile.any()) editor.focus();
            }
                

        // for CodeMirror
        function switchTheme() {
            var newTheme;

            switch(editor.getOption("theme"))
                {
                case "newlisp":
                    newTheme = "lesser-dark"; break;
                case "lesser-dark":
                    newTheme = "solarized light"; break;
                case "solarized light":
                    newTheme = "xq-light"; break;
                case "xq-light":
                    newTheme = "solarized dark"; break;
                case "solarized dark":
                    newTheme = "ambiance"; break;
                case "ambiance":
                    newTheme = "no-color"; break;
                case "no-color":
                    newTheme = "newlisp"; break;
                default:
                    newTheme = "newlisp"; break;
                }
            writeLog("# set theme: " + newTheme);
            editor.setOption("theme", newTheme);
            cmlog.setOption("theme", newTheme);
            if(!isMobile.any()) editor.focus();
            }

        function flashBackground(duration) {
            document.body.style.background = "#68b";
            var myTimer = setInterval(function() {
                clearInterval(myTimer);
                document.body.style.background = "#7080B0";
                }, duration);
            if(!isMobile.any()) editor.focus();
            }

        function restoreLayoutAndTheme() {
            var theme = localStorage.theme;	

	        if(!isMobile.any()) {
                var allInputs = document.getElementsByTagName("input");
                for(var i = 0; i < allInputs.length; i++) {
                    allInputs[i].setAttribute('style', "font-size: 1.1em");
                    }
            	document.getElementById('keywordtext').setAttribute('size', '12');
		        }

            editor.setOption('lineNumbers', localStorage.lineNumbers == "true");

            LayoutIdx = localStorage.layout;
            if(LayoutIdx != 0 && LayoutIdx != 1 && LayoutIdx  != 2)
                LayoutIdx = 0;
            resizeTextarea();

            if(!theme) { 
                if(isMobile.any()) { theme = "newlisp"; } 
                else { theme = "newlisp"; }
                }
            editor.setOption("theme", theme);
            cmlog.setOption("theme", theme);

            var elem = document.getElementById("files");
            if(isMobile.any()) { elem.style.marginLeft = "-200px"; }
            else { elem.style.marginLeft = "0px"; }
            writeLog("# set theme: " + theme);
            if(!isMobile.any()) editor.focus();
            }

        function resizeTextarea() {
            var styleSheet;
            var offset = 0;

            // set width
            document.getElementById('editdiv').className = LayoutClass[LayoutIdx][0];
            document.getElementById('logdiv').className = LayoutClass[LayoutIdx][1];
            document.getElementById('editdiv').style.width = LayoutWidth[LayoutIdx][0];
            document.getElementById('logdiv').style.width = LayoutWidth[LayoutIdx][1];

            // set height
            for(var i = 0; i < document.styleSheets.length; i++) {
                var sheet = document.styleSheets[i];
                if(sheet.title == 'cm-main-style') { styleSheet = sheet; }
                }

            styleSheet.deleteRule(0);
    	    if(isMobile.any()) { offset = 10; }
            if(LayoutIdx < 2) {
                var vertical = window.innerHeight - 80 - offset;
                } else {
                var vertical = (window.innerHeight - 120) / 2;
                } 

            styleSheet.insertRule('.CodeMirror { height: ' + vertical + 'px; }', 0);
            }

        function handleFileSelect(evt) {
            var files = evt.target.files; // FileList object
            var textFile = files[0];

            // textFile.name textFile.type textFile.size
            // textFile.lastModifiedDate[.toLocaleDateString()]

            //Only process text files.
            if(textFile.type.match('image.*')) {
                alert(textFile.type + 'is an invalid file type');
                return;
                }
 
            var reader = new FileReader();
 
            // read file asynchronous and fill editor box
            reader.onload = (function(theFile) {
                return function(e) {
                    editor.setCursor(0, 0);
                    editor.setValue('');
                    editor.setValue(e.target.result);
                    };
                })(textFile);
 
            // Read in the text file
            reader.readAsText(textFile);
            writeLog('# loaded ' + textFile.name + ' -', textFile.size + ' bytes');
            if(!isMobile.any()) editor.focus();
            }

        function GetSelectedText() {
            var selText = "";
            if (window.getSelection) {  // all browsers, except IE before version 9
                if (document.activeElement &&
                    document.activeElement.tagName.toLowerCase () == "textarea")
                    {
                    var text = document.activeElement.value;
                    selText = text.substring (document.activeElement.selectionStart,
                                              document.activeElement.selectionEnd);
                    } else {
                    var selRange = window.getSelection ();
                    selText = selRange.toString ();
                    }
                } else {
                    if (document.selection.createRange) {  // Internet Explorer
                        var range = document.selection.createRange ();
                        selText = range.text;
                        }
                    }
                if (selText !== "") {
                    document.getElementById('keywordtext').value = selText;
                    //alert(selText);
                    }
            }   
 
        function searchKeyPress(e) {
            // look for window.event in case event isn't passed in
            if(typeof e == 'undefined' && window.event) { e = window.event; }
            if(e.keyCode == 13) { document.getElementById('doc').click(); }
            }       

        //function cmeditorKeyPress () { alert(' key pressed '); } 

        function sleep(ms){
            var startTime = new Date().getTime();
            while (new Date().getTime() < startTime + ms) {}
            }

        function getCaretPosition (field) {
            var caretPos = 0;
            // IE 9 and after
            if (document.selection) {
                field.focus ();
                var sel = document.selection.createRange ();
                sel.moveStart ('character', - field.value.length);
                caretPos = sel.text.length;
                }
            // Firefox, Safari, Chrome
            else if (field.selectionStart || field.selectionStart == '0') {
                caretPos = field.selectionStart; }
            return (caretPos);
            }

        function OpenDoc () {
            var selText = document.getElementById('keywordtext').value.trim();
             
            if(selText.charAt(selText.length - 1) == "?") {
                 selText = selText.substring(0, selText.length - 1) + 'p';
                }
            if(selText !== '') {
                //window.open('http://www.newlisp.org/downloads/newlisp_manual.html#'+selText,'MsgWindow');
                window.open('newlisp_manual.html#'+selText,'MsgWindow');
                }
            else {
                //window.open('http://www.newlisp.org/downloads/manual_frame.html','MsgWindow');
                window.open('manual_frame.html','MsgWindow');
                }
            }

        function saveEdit() {
            localStorage.userEdits = editor.getValue();
            localStorage.log = cmlog.getValue();
            localStorage.theme = editor.getOption("theme");
            localStorage.layout = LayoutIdx;
            localStorage.lineNumbers = editor.getOption('lineNumbers');
            writeLog("# saved to local browser storage");
            if(!isMobile.any()) editor.focus();
            }

        function restoreLocalStorage() {
            var log = document.getElementById('output');
            if(localStorage.log != null) {
                cmlog.setValue(localStorage.log);
                }
            if(localStorage.userEdits != null) {
                //content.value = localStorage.userEdits;
                editor.setValue(localStorage.userEdits);
                if(editor.getValue().length > 0)
                     { writeLog("# local browser storage recovered"); }
                else
                     { writeLog("# local browser storage is empty"); }
                }
            else { 
                clearLog();
                writeLog("# no local browser storage found"); 
                }
            }

        function insertEdit(text) {
            editor.setValue(text);
            }

        function changeSaveOpenButton() {
            document.getElementById('files').disabled = true;
            document.getElementById('browse').disabled = false; // for mobile
            // make prev button
            document.getElementById('save').value= 'prev';
            document.getElementById('save').setAttribute('style', 'color: green;');
            var action = "Module.print(newlispEvalStr('(Tutorial:prev)'))";
            document.getElementById('save').setAttribute('onclick', action);
            // make next button
            document.getElementById('browse').value= 'next';
            document.getElementById('browse').setAttribute('style', 'color: green;');
            action = "Module.print(newlispEvalStr('(Tutorial:next)'))";
            document.getElementById('browse').setAttribute('onclick', action);
            }

        function enableButtons() {
            var allInputs = document.getElementsByTagName('input');
            for(var i = 0; i < allInputs.length; i++) {
                allInputs[i].disabled = false;
                }
            // leave file selection button disabled on Android, IOS and mobile Windows
            if(isMobile.any()) {
                document.getElementById('files').disabled = true;
                document.getElementById('browse').disabled = true;
                }
            }

        function initCoderMirrorWidgets() {
            editor = CodeMirror.fromTextArea(document.getElementById('input'), { 
                mode: "newlisp",
                theme: "lesser-dark",
                lineNumbers: false,
                styleActiveLine: false,
                autoCloseBrackets: true,
                matchBrackets: true,
                lineWrapping: true,
                autofocus: true
                });

            cmlog = CodeMirror.fromTextArea(document.getElementById('output'), { 
                mode: "text/html",
                theme: "lesser-dark",
                readOnly: true,
                lineWrapping: true
                });    

            //editor.on("keypress",  function() { cmeditorKeyPress(); });
            }

-->
    </script>
  </head>

  <body onmouseup="GetSelectedText();">
    <!-- this hidden text area contains code which is preloaded into newLISP. -->
    <textarea id="code" style="display: none;">
; insert newLISP code for preload here
    (set (global 'display-html) (fn (x y)
        (replace {\} x {\\}) 
        (replace "\n" x "\\n") 
        (replace {'} x {\'})
        (replace {"} x {\"})
        (eval-string-js (if (true? y)
        (string {displayHTMLnew('} x {')})
        (string {displayHTML('} x {')})))))
; eof
    </textarea>
    <div class="emscripten" id="status">Downloading...</div>
    <div class="emscripten">
      <progress value="0" max="100" id="progress" hidden=1></progress> 
    </div>
    <div class="menu">
    <input type="button" value="eval" id="evalinput" class="blue-button" title="eval newLISP - Ctl-enter"
         onclick="evaluateInput();" disabled />
    <input type="button" value="silent" id="evalsilent" class="blue-button"
         title="eval silent - Shift-Ctrl-enter" onclick="evaluateInputSilent();" disabled />
    <input type="button" value="JS" id="evalinputJS" class="blue-button" title="eval JavaScript"
         onclick="evaluateInputJS();" disabled />
    <input type="button" value="html" id="evalinputHTML" class="blue-button" title="display HTML"
         onclick="displayHTMLnew(editor.getValue())" disabled />
    <input type="button" value="x-edit" id="clearinput" class="red-button" title="clear editor - Ctrl-L" i
      onclick="clearEditor();" disabled />
    <input type="button" value="x-log" id="clearoutput" class="red-button" title="clear log - Shift-Ctrl-L"
         onclick="clearLog();"  disable />
    <input type="button" value="layout" id="switchlayout" class="button" title="change layout"
         onclick="switchLayout();" disabled />
    <input type="button" value='#' id="linenumbers" class="button" title="line numbers - Ctrl-1"
         onclick="lineNumbers();" disabled />
    <input type="button" value="theme" id="theme" class="button" title="change color scheme"
         onclick="switchTheme();" disabled />
    <input type="button" value='&#8635' id="reload" class="red-button" title="reload newLISP - Ctrl-R"
         onclick="reload();" />
    <input type="button" value="info" id="info" class="button" title="about this program"
         onclick="window.open('README.html','MsgWindow');" disabled />
    <input type="button" value="doc" id="doc" class="button" title="reference manual"
         onclick="OpenDoc();"/>
    <input type="text" class="keyword" id="keywordtext" size="10" 
         title="search keyword" onkeypress="searchKeyPress(event);" />
    </div>
<!--  EDITOR -->
    <div class="left" id="editdiv" style="width: 49%">
    <form><textarea id="input" display="none" disabled >; Welcome to newLISP running in a browser.
; based on newLISP v10.6.3 2015-05-14, Emscripten v1.29.0
; best used with FireFox browser
; Click [eval]

(println "Hello World")

(define (double x)
   (+ x x))

(println "=> " (double 123))

; [eval] shows all the return values from
; evaluated expressions plus the effect from
; 'println'. Now click [silent]. It only shows
; the effect from the 'println' expression.

; To find out more about how to use this 
; editor, click the [info] button.

; The best introduction to newLISP can be found
; here:
; en.wikibooks.org/wiki/Introduction_to_newLISP
;
; More documentation can be found here:
; www.newlisp.org/index.cgi?Documentation
; or by clicking the [doc] button.
</textarea></form>
     <input  type="button" value="save" id="save" class="button" title="save to local storage - Ctrl-S"
        onclick="saveEdit();" disabled />
     <input  type="button" value="open" id="browse" class="red-button" title="open disk file - Ctrl-O"
        onclick="openFile()" disabled />
     <input type="file" class="filesbutton" id="files" name="load" disabled />
    </div>
<!-- LOG MONITOR -->
    <div class="right" id="logdiv" style="width: 48%">
    <textarea  id="output"  disabled ></textarea>
    <center><font size="-1">Copyright &copy; 2014-2015, <a href="http://newlisp.org">newlisp.org</a>
    </font></center>
    </div>

    <script type='text/javascript'>
<!--
        // EMSCRIPTEN loading newlisp-js-lib.js showing progress of downloading
        // importing newlispEvalStr and output to the console
        var Module = {
          preRun: [],
          postRun: [(function() {
            newlispEvalStr = Module.cwrap('newlispEvalStr', 'string', ['string']); 
            // preload newLISP functions from code textarea id='code'
            newlispEvalStr(document.getElementById('code').value);
          })],
          print: (function() {
            //var element = document.getElementById('output');
            //element.value = ''; // clear browser cache
            return function(text) {
              text = Array.prototype.slice.call(arguments).join(' ');
              writeLog(text);
              //element.value += text + "\n";
              //element.scrollTop = 99999; // focus on bottom
            };
          })(),
          printErr: function(text) {
            text = Array.prototype.slice.call(arguments).join(' ');
            console.log(text);
          },
          canvas: document.getElementById('canvas'),
          setStatus: function(text) {
            if (!Module.setStatus.last) Module.setStatus.last = { time: Date.now(), text: '' };
            if (text === Module.setStatus.text) return;
            var m = text.match(/([^(]+)\((\d+(\.\d+)?)\/(\d+)\)/);
            var now = Date.now();
            if (m && now - Date.now() < 30) return; // if progress update, skip it if too soon
            var statusElement = document.getElementById('status');
            var progressElement = document.getElementById('progress');
            if (m) {
              text = m[1];
              progressElement.value = parseInt(m[2])*100;
              progressElement.max = parseInt(m[4])*100;
              progressElement.hidden = false;
            } else {
              progressElement.value = null;
              progressElement.max = null;
              progressElement.hidden = true;

              // start application, start CodeMirror, restore local storage and layout
              if(editor == false) {
                enableButtons();
                initCoderMirrorWidgets();
                restoreLocalStorage();
                restoreLayoutAndTheme();
                window.onresize = resizeTextarea;
                //file browser
                document.getElementById('files').addEventListener('change', handleFileSelect, false);
                }

              if(isMobile.any()) { 
                // settings for mobile device orientation discovery
                window.onorientationchange = detectIPadOrientation;
                // on mobile scroll page into position when keyboard closes
                document.addEventListener('focusout', function(e) {window.scrollTo(0, 0);});
                }
            }
            statusElement.innerHTML = text;
          },
          totalDependencies: 0,
          monitorRunDependencies: function(left) {
            this.totalDependencies = Math.max(this.totalDependencies, left);
            Module.setStatus(left ? 'Preparing... (' + (this.totalDependencies-left) +
                          '/' + this.totalDependencies + ')' : 'All downloads complete.');
          }
        };
        Module.setStatus('Downloading...');
-->
      </script>
      <script async type="text/javascript" src="newlisp-js-lib.js"></script>
  </body>
</html>

<!-- eof -->