/* ***** BEGIN LICENSE BLOCK *****
 * Distributed under the BSD license:
 *
 * Copyright (c) 2010, Ajax.org B.V.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Ajax.org B.V. nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * ***** END LICENSE BLOCK ***** */


define(function(require, exports, module) {
"use strict";

require("ace/lib/fixoldbrowsers");
var config = require("ace/config");
config.init();
var env = {};

var dom = require("ace/lib/dom");
var net = require("ace/lib/net");
var lang = require("ace/lib/lang");
var useragent = require("ace/lib/useragent");

var event = require("ace/lib/event");
var theme = require("ace/theme/textmate");
var EditSession = require("ace/edit_session").EditSession;
var UndoManager = require("ace/undomanager").UndoManager;

var HashHandler = require("ace/keyboard/hash_handler").HashHandler;

var Renderer = require("ace/virtual_renderer").VirtualRenderer;
var Editor = require("ace/editor").Editor;
var MultiSelect = require("ace/multi_select").MultiSelect;

var whitespace = require("ace/ext/whitespace");

var doclist = require("./doclist");
var modelist = require("ace/ext/modelist");
var layout = require("./layout");
var TokenTooltip = require("./token_tooltip").TokenTooltip;
var util = require("./util");
var saveOption = util.saveOption;
var fillDropdown = util.fillDropdown;
var bindCheckbox = util.bindCheckbox;
var bindDropdown = util.bindDropdown;

var ElasticTabstopsLite = require("ace/ext/elastic_tabstops_lite").ElasticTabstopsLite;

var IncrementalSearch = require("ace/incremental_search").IncrementalSearch;


var workerModule = require("ace/worker/worker_client");
if (location.href.indexOf("noworker") !== -1) {
    workerModule.WorkerClient = workerModule.UIWorkerClient;
}

/*********** create editor ***************************/
var container = document.getElementById("editor-container");

// Splitting.
var Split = require("ace/split").Split;
var split = new Split(container, theme, 1);
env.editor = split.getEditor(0);
split.on("focus", function(editor) {
    env.editor = editor;
    updateUIEditorOptions();
});
env.split = split;
window.env = env;

// add multiple cursor support to editor
require("ace/multi_select").MultiSelect(env.editor);

var consoleEl = dom.createElement("div");
container.parentNode.appendChild(consoleEl);
consoleEl.style.cssText = "position:fixed; bottom:1px; right:0;\
border:1px solid #baf; z-index:100";

var cmdLine = new layout.singleLineEditor(consoleEl);
cmdLine.editor = env.editor;
env.editor.cmdLine = cmdLine;

env.editor.showCommandLine = function(val) {
    this.cmdLine.focus();
    if (typeof val == "string")
        this.cmdLine.setValue(val, 1);
};

/**
 * This demonstrates how you can define commands and bind shortcuts to them.
 */
env.editor.commands.addCommands([{
    name: "gotoline",
    bindKey: {win: "Ctrl-L", mac: "Command-L"},
    exec: function(editor, line) {
        if (typeof line == "object") {
            var arg = this.name + " " + editor.getCursorPosition().row;
            editor.cmdLine.setValue(arg, 1);
            editor.cmdLine.focus();
            return;
        }
        line = parseInt(line, 10);
        if (!isNaN(line))
            editor.gotoLine(line);
    },
    readOnly: true
}, {
    name: "snippet",
    bindKey: {win: "Alt-C", mac: "Command-Alt-C"},
    exec: function(editor, needle) {
        if (typeof needle == "object") {
            editor.cmdLine.setValue("snippet ", 1);
            editor.cmdLine.focus();
            return;
        }
        var s = snippetManager.getSnippetByName(needle, editor);
        if (s)
            snippetManager.insertSnippet(editor, s.content);
    },
    readOnly: true
}, {
    name: "focusCommandLine",
    bindKey: "shift-esc|ctrl-`",
    exec: function(editor, needle) { editor.cmdLine.focus(); },
    readOnly: true
}, {
    name: "nextFile",
    bindKey: "Ctrl-tab",
    exec: function(editor) { doclist.cycleOpen(editor, 1); },
    readOnly: true
}, {
    name: "previousFile",
    bindKey: "Ctrl-shift-tab",
    exec: function(editor) { doclist.cycleOpen(editor, -1); },
    readOnly: true
}, {
    name: "execute",
    bindKey: "ctrl+enter",
    exec: function(editor) {
        try {
            var r = window.eval(editor.getCopyText()||editor.getValue());
        } catch(e) {
            r = e;
        }
        editor.cmdLine.setValue(r + "")
    },
    readOnly: true
}, {
    name: "showKeyboardShortcuts",
    bindKey: {win: "Ctrl-Alt-h", mac: "Command-Alt-h"},
    exec: function(editor) {
        config.loadModule("ace/ext/keybinding_menu", function(module) {
            module.init(editor);
            editor.showKeyboardShortcuts()
        })
    }
}, {
    name: "increaseFontSize",
    bindKey: "Ctrl-+",
    exec: function(editor) {
        var size = parseInt(editor.getFontSize(), 10) || 12;
        editor.setFontSize(size + 1);
    }
}, {
    name: "decreaseFontSize",
    bindKey: "Ctrl+-",
    exec: function(editor) {
        var size = parseInt(editor.getFontSize(), 10) || 12;
        editor.setFontSize(Math.max(size - 1 || 1));
    }
}, {
    name: "resetFontSize",
    bindKey: "Ctrl+0",
    exec: function(editor) {
        editor.setFontSize(12);
    }
}]);


env.editor.commands.addCommands(whitespace.commands);

cmdLine.commands.bindKeys({
    "Shift-Return|Ctrl-Return|Alt-Return": function(cmdLine) { cmdLine.insert("\n"); },
    "Esc|Shift-Esc": function(cmdLine){ cmdLine.editor.focus(); },
    "Return": function(cmdLine){
        var command = cmdLine.getValue().split(/\s+/);
        var editor = cmdLine.editor;
        editor.commands.exec(command[0], editor, command[1]);
        editor.focus();
    }
});

cmdLine.commands.removeCommands(["find", "gotoline", "findall", "replace", "replaceall"]);

var commands = env.editor.commands;
commands.addCommand({
    name: "save",
    bindKey: {win: "Ctrl-S", mac: "Command-S"},
    exec: function(arg) {
        var session = env.editor.session;
        name = session.name.match(/[^\/]+$/)
        localStorage.setItem(
            "saved_file:" + name,
            session.getValue()
        );
        env.editor.cmdLine.setValue("saved "+ name);
    }
});

commands.addCommand({
    name: "load",
    bindKey: {win: "Ctrl-O", mac: "Command-O"},
    exec: function(arg) {
        var session = env.editor.session;
        name = session.name.match(/[^\/]+$/)
        var value = localStorage.getItem("saved_file:" + name);
        if (typeof value == "string") {
            session.setValue(value);
            env.editor.cmdLine.setValue("loaded "+ name);
        } else {
            env.editor.cmdLine.setValue("no previuos value saved for "+ name);
        }
    }
});

var keybindings = {    
    ace: null, // Null = use "default" keymapping
    vim: require("ace/keyboard/vim").handler,
    emacs: "ace/keyboard/emacs",
    // This is a way to define simple keyboard remappings
    custom: new HashHandler({
        "gotoright":      "Tab",
        "indent":         "]",
        "outdent":        "[",
        "gotolinestart":  "^",
        "gotolineend":    "$"
    })
};



/*********** manage layout ***************************/
var consoleHeight = 20;
function onResize() {
    var left = env.split.$container.offsetLeft;
    var width = document.documentElement.clientWidth - left;
    container.style.width = width + "px";
    container.style.height = document.documentElement.clientHeight - consoleHeight + "px";
    env.split.resize();

    consoleEl.style.width = width + "px";
    cmdLine.resize();
}

window.onresize = onResize;
onResize();

/*********** options panel ***************************/
var docEl = document.getElementById("doc");
var modeEl = document.getElementById("mode");
var wrapModeEl = document.getElementById("soft_wrap");
var themeEl = document.getElementById("theme");
var foldingEl = document.getElementById("folding");
var selectStyleEl = document.getElementById("select_style");
var highlightActiveEl = document.getElementById("highlight_active");
var showHiddenEl = document.getElementById("show_hidden");
var showGutterEl = document.getElementById("show_gutter");
var showPrintMarginEl = document.getElementById("show_print_margin");
var highlightSelectedWordE = document.getElementById("highlight_selected_word");
var showHScrollEl = document.getElementById("show_hscroll");
var showVScrollEl = document.getElementById("show_vscroll");
var animateScrollEl = document.getElementById("animate_scroll");
var softTabEl = document.getElementById("soft_tab");
var behavioursEl = document.getElementById("enable_behaviours");

fillDropdown(docEl, doclist.all);

fillDropdown(modeEl, modelist.modes);
var modesByName = modelist.modesByName;
bindDropdown("mode", function(value) {
    env.editor.session.setMode(modesByName[value].mode || modesByName.text.mode);
    env.editor.session.modeName = value;
});

doclist.history = doclist.docs.map(function(doc) {
    return doc.name;
});
doclist.history.index = 0;
doclist.cycleOpen = function(editor, dir) {
    var h = this.history
    h.index += dir;
    if (h.index >= h.length) 
        h.index = 0;
    else if (h.index <= 0)
        h.index = h.length - 1;
    var s = h[h.index];
    docEl.value = s;
    docEl.onchange();
    h.index
}
doclist.addToHistory = function(name) {
    var h = this.history
    var i = h.indexOf(name);
    if (i != h.index) {
        if (i != -1)
            h.splice(i, 1);
        h.index = h.push(name);
    }
}

bindDropdown("doc", function(name) {
    doclist.loadDoc(name, function(session) {
        if (!session)
            return;
        doclist.addToHistory(session.name);
        session = env.split.setSession(session);
        whitespace.detectIndentation(session);
        updateUIEditorOptions();
        env.editor.focus();
    });
});


function updateUIEditorOptions() {
    var editor = env.editor;
    var session = editor.session;

    session.setFoldStyle(foldingEl.value);

    saveOption(docEl, session.name);
    saveOption(modeEl, session.modeName || "text");
    saveOption(wrapModeEl, session.getUseWrapMode() ? session.getWrapLimitRange().min || "free" : "off");

    saveOption(selectStyleEl, editor.getSelectionStyle() == "line");
    saveOption(themeEl, editor.getTheme());
    saveOption(highlightActiveEl, editor.getHighlightActiveLine());
    saveOption(showHiddenEl, editor.getShowInvisibles());
    saveOption(showGutterEl, editor.renderer.getShowGutter());
    saveOption(showPrintMarginEl, editor.renderer.getShowPrintMargin());
    saveOption(highlightSelectedWordE, editor.getHighlightSelectedWord());
    saveOption(showHScrollEl, editor.renderer.getHScrollBarAlwaysVisible());
    saveOption(animateScrollEl, editor.getAnimatedScroll());
    saveOption(softTabEl, session.getUseSoftTabs());
    saveOption(behavioursEl, editor.getBehavioursEnabled());
}

event.addListener(themeEl, "mouseover", function(e){
    this.desiredValue = e.target.value;
    if (!this.$timer)
        this.$timer = setTimeout(this.updateTheme);
});

event.addListener(themeEl, "mouseout", function(e){
    this.desiredValue = null;
    if (!this.$timer)
        this.$timer = setTimeout(this.updateTheme, 20);
});

themeEl.updateTheme = function(){
    env.split.setTheme(themeEl.desiredValue || themeEl.selectedValue);
    themeEl.$timer = null;
};

bindDropdown("theme", function(value) {
    if (!value)
        return;
    env.editor.setTheme(value);
    themeEl.selectedValue = value;
});

bindDropdown("keybinding", function(value) {
    env.editor.setKeyboardHandler(keybindings[value]);
});

bindDropdown("fontsize", function(value) {
    env.split.setFontSize(value);
});

bindDropdown("folding", function(value) {
    env.editor.session.setFoldStyle(value);
    env.editor.setShowFoldWidgets(value !== "manual");
});

bindDropdown("soft_wrap", function(value) {
    var session = env.editor.session;
    var renderer = env.editor.renderer;
    switch (value) {
        case "off":
            session.setUseWrapMode(false);
            renderer.setPrintMarginColumn(80);
            break;
        case "free":
            session.setUseWrapMode(true);
            session.setWrapLimitRange(null, null);
            renderer.setPrintMarginColumn(80);
            break;
        default:
            session.setUseWrapMode(true);
            var col = parseInt(value, 10);
            session.setWrapLimitRange(col, col);
            renderer.setPrintMarginColumn(col);
    }
});

bindCheckbox("select_style", function(checked) {
    env.editor.setSelectionStyle(checked ? "line" : "text");
});

bindCheckbox("highlight_active", function(checked) {
    env.editor.setHighlightActiveLine(checked);
});

bindCheckbox("show_hidden", function(checked) {
    env.editor.setShowInvisibles(checked);
});

bindCheckbox("display_indent_guides", function(checked) {
    env.editor.setDisplayIndentGuides(checked);
});

bindCheckbox("show_gutter", function(checked) {
    env.editor.renderer.setShowGutter(checked);
});

bindCheckbox("show_print_margin", function(checked) {
    env.editor.renderer.setShowPrintMargin(checked);
});

bindCheckbox("highlight_selected_word", function(checked) {
    env.editor.setHighlightSelectedWord(checked);
});

bindCheckbox("show_hscroll", function(checked) {
    env.editor.setOption("hScrollBarAlwaysVisible", checked);
});

bindCheckbox("show_vscroll", function(checked) {
    env.editor.setOption("vScrollBarAlwaysVisible", checked);
});

bindCheckbox("animate_scroll", function(checked) {
    env.editor.setAnimatedScroll(checked);
});

bindCheckbox("soft_tab", function(checked) {
    env.editor.session.setUseSoftTabs(checked);
});

bindCheckbox("enable_behaviours", function(checked) {
    env.editor.setBehavioursEnabled(checked);
});

bindCheckbox("fade_fold_widgets", function(checked) {
    env.editor.setFadeFoldWidgets(checked);
});
bindCheckbox("read_only", function(checked) {
    env.editor.setReadOnly(checked);
});
bindCheckbox("scrollPastEnd", function(checked) {
    env.editor.setOption("scrollPastEnd", checked);
});

bindDropdown("split", function(value) {
    var sp = env.split;
    if (value == "none") {
        sp.setSplits(1);
    } else {
        var newEditor = (sp.getSplits() == 1);
        sp.setOrientation(value == "below" ? sp.BELOW : sp.BESIDE);        
        sp.setSplits(2);

        if (newEditor) {
            var session = sp.getEditor(0).session;
            var newSession = sp.setSession(session, 1);
            newSession.name = session.name;
        }
    }
});


bindCheckbox("elastic_tabstops", function(checked) {
    env.editor.setOption("useElasticTabstops", checked);
});

var iSearchCheckbox = bindCheckbox("isearch", function(checked) {
    env.editor.setOption("useIncrementalSearch", checked);
});

env.editor.addEventListener('incrementalSearchSettingChanged', function(event) {
    iSearchCheckbox.checked = event.isEnabled;
});


function synchroniseScrolling() {
    var s1 = env.split.$editors[0].session;
    var s2 = env.split.$editors[1].session;
    s1.on('changeScrollTop', function(pos) {s2.setScrollTop(pos)});
    s2.on('changeScrollTop', function(pos) {s1.setScrollTop(pos)});
    s1.on('changeScrollLeft', function(pos) {s2.setScrollLeft(pos)});
    s2.on('changeScrollLeft', function(pos) {s1.setScrollLeft(pos)});
}

bindCheckbox("highlight_token", function(checked) {
    var editor = env.editor;
    if (editor.tokenTooltip && !checked) {
        editor.tokenTooltip.destroy();
        delete editor.tokenTooltip;
    } else if (checked) {
        editor.tokenTooltip = new TokenTooltip(editor);
    }
});

/************** dragover ***************************/
event.addListener(container, "dragover", function(e) {
    var types = e.dataTransfer.types;
    if (types && Array.prototype.indexOf.call(types, 'Files') !== -1)
        return event.preventDefault(e);
});

event.addListener(container, "drop", function(e) {
    var file;
    try {
        file = e.dataTransfer.files[0];
        if (window.FileReader) {
            var reader = new FileReader();
            reader.onload = function() {
                var mode = modelist.getModeForPath(file.name);

                env.editor.session.doc.setValue(reader.result);
                modeEl.value = mode.name;
                env.editor.session.setMode(mode.mode);
                env.editor.session.modeName = mode.name;
            };
            reader.readAsText(file);
        }
        return event.preventDefault(e);
    } catch(err) {
        return event.stopEvent(e);
    }
});



var StatusBar = require("ace/ext/statusbar").StatusBar;
new StatusBar(env.editor, cmdLine.container);


var Emmet = require("ace/ext/emmet");
net.loadScript("http://nightwing.github.io/emmet-core/emmet.js", function() {
    Emmet.setCore(window.emmet);
    env.editor.setOption("enableEmmet", true);
});


// require("ace/placeholder").PlaceHolder;

var snippetManager = require("ace/snippets").snippetManager;

env.editSnippets = function() {
    var sp = env.split;
    if (sp.getSplits() == 2) {
        sp.setSplits(1);
        return;
    }
    sp.setSplits(1);
    sp.setSplits(2);
    sp.setOrientation(sp.BESIDE);
    var editor = sp.$editors[1];
    var id = sp.$editors[0].session.$mode.$id || "";
    var m = snippetManager.files[id];
    if (!doclist["snippets/" + id]) {
        var text = m.snippetText;
        var s = doclist.initDoc(text, "", {});
        s.setMode("ace/mode/snippets");
        doclist["snippets/" + id] = s
    }
    editor.on("blur", function() {
        m.snippetText = editor.getValue();
        snippetManager.unregister(m.snippets);
        m.snippets = snippetManager.parseSnippetFile(m.snippetText, m.scope);
        snippetManager.register(m.snippets);
    })
    sp.$editors[0].once("changeMode", function() {
        sp.setSplits(1);
    })
    editor.setSession(doclist["snippets/" + id], 1);
    editor.focus();
}

require("ace/ext/language_tools");
env.editor.setOptions({
    enableBasicAutocompletion: true,
    enableSnippets: true
})

});

// allow easy access to ace in console, but not in ace code which uses strict
function isNonStrict() {
    try { return !!arguments.callee.caller.caller }
    catch(e){ return false }
}
window.__defineGetter__("ace", function(){ return isNonStrict() && env.editor });
window.__defineGetter__("editor", function(){ return isNonStrict() && env.editor });
window.__defineGetter__("session", function(){ return isNonStrict() && env.editor.session });
window.__defineGetter__("split", function(){ return isNonStrict() && env.split });
