/* Demonstration of embedding CodeMirror in a bigger application. The
 * interface defined here is a mess of prompts and confirms, and
 * should probably not be used in a real project.
 */

function MirrorFrame(place, options) {
    this.home = document.createElement("DIV");
    if (place.appendChild)
        place.appendChild(this.home);
    else
        place(this.home);

    var self = this;

    function makeButton(name, action) {
        var button = document.createElement("INPUT");
        button.type = "button";
        button.value = name;
        self.home.appendChild(button);
        button.onclick = function () {
            self[action].call(self);
        };
    }

    makeButton("Search", "search");
    makeButton("Replace", "replace");
    makeButton("Current line", "line");
    makeButton("Jump to line", "jump");
    makeButton("Insert constructor", "macro");
    makeButton("Indent all", "reindent");

    this.mirror = new CodeMirror(this.home, options);
}

MirrorFrame.prototype = {
    search: function () {
        var text = prompt("Enter search term:", "");
        if (!text) return;

        var first = true;
        do {
            var cursor = this.mirror.getSearchCursor(text, first, true);
            first = false;
            while (cursor.findNext()) {
                cursor.select();
                if (!confirm("Search again?"))
                    return;
            }
        } while (confirm("End of document reached. Start over?"));
    },

    replace: function () {
        // This is a replace-all, but it is possible to implement a
        // prompting replace.
        var from = prompt("Enter search string:", ""), to;
        if (from) to = prompt("What should it be replaced with?", "");
        if (to == null) return;

        var cursor = this.mirror.getSearchCursor(from, false);
        while (cursor.findNext())
            cursor.replace(to);
    },

    jump: function () {
        var line = prompt("Jump to line:", "");
        if (line && !isNaN(Number(line)))
            this.mirror.jumpToLine(Number(line));
    },

    line: function () {
        alert("The cursor is currently at line " + this.mirror.currentLine());
        this.mirror.focus();
    },

    macro: function () {
        var name = prompt("Name your constructor:", "");
        if (name)
            this.mirror.replaceSelection("function " + name + "() {\n  \n}\n\n" + name + ".prototype = {\n  \n};\n");
    },

    reindent: function () {
        this.mirror.reindent();
    }
};
