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public/javascripts/ace/keybinding-emacs.js  view on Meta::CPAN

    eMods[hashId] = c.toLowerCase() + "-";
});

exports.handler.onCopy = function(e, editor) {
    if (editor.$handlesEmacsOnCopy) return;
    editor.$handlesEmacsOnCopy = true;
    exports.handler.commands.killRingSave.exec(editor);
    editor.$handlesEmacsOnCopy = false;
};

exports.handler.onPaste = function(e, editor) {
    editor.pushEmacsMark(editor.getCursorPosition());
};

exports.handler.bindKey = function(key, command) {
    if (typeof key == "object")
        key = key[this.platform];
    if (!key)
        return;

    var ckb = this.commandKeyBinding;
    key.split("|").forEach(function(keyPart) {
        keyPart = keyPart.toLowerCase();
        ckb[keyPart] = command;
        var keyParts = keyPart.split(" ").slice(0,-1);
        keyParts.reduce(function(keyMapKeys, keyPart, i) {
            var prefix = keyMapKeys[i-1] ? keyMapKeys[i-1] + ' ' : '';
            return keyMapKeys.concat([prefix + keyPart]);
        }, []).forEach(function(keyPart) {
            if (!ckb[keyPart]) ckb[keyPart] = "null";
        });
    }, this);
};

exports.handler.getStatusText = function(editor, data) {
  var str = "";
  if (data.count)
    str += data.count;
  if (data.keyChain)
    str += " " + data.keyChain;
  return str;
};

exports.handler.handleKeyboard = function(data, hashId, key, keyCode) {
    if (keyCode === -1) return undefined;

    var editor = data.editor;
    editor._signal("changeStatus");
    if (hashId == -1) {
        editor.pushEmacsMark();
        if (data.count) {
            var str = new Array(data.count + 1).join(key);
            data.count = null;
            return {command: "insertstring", args: str};
        }
    }

    var modifier = eMods[hashId];
    if (modifier == "c-" || data.count) {
        var count = parseInt(key[key.length - 1]);
        if (typeof count === 'number' && !isNaN(count)) {
            data.count = Math.max(data.count, 0) || 0;
            data.count = 10 * data.count + count;
            return {command: "null"};
        }
    }
    if (modifier) key = modifier + key;
    if (data.keyChain) key = data.keyChain += " " + key;
    var command = this.commandKeyBinding[key];
    data.keyChain = command == "null" ? key : "";
    if (!command) return undefined;
    if (command === "null") return {command: "null"};

    if (command === "universalArgument") {
        data.count = -4;
        return {command: "null"};
    }
    var args;
    if (typeof command !== "string") {
        args = command.args;
        if (command.command) command = command.command;
        if (command === "goorselect") {
            command = editor.emacsMark() ? args[1] : args[0];
            args = null;
        }
    }

    if (typeof command === "string") {
        if (command === "insertstring" ||
            command === "splitline" ||
            command === "togglecomment") {
            editor.pushEmacsMark();
        }
        command = this.commands[command] || editor.commands.commands[command];
        if (!command) return undefined;
    }

    if (!command.readOnly && !command.isYank)
        data.lastCommand = null;

    if (!command.readOnly && editor.emacsMark())
        editor.setEmacsMark(null);
        
    if (data.count) {
        var count = data.count;
        data.count = 0;
        if (!command || !command.handlesCount) {
            return {
                args: args,
                command: {
                    exec: function(editor, args) {
                        for (var i = 0; i < count; i++)
                            command.exec(editor, args);
                    },
                    multiSelectAction: command.multiSelectAction
                }
            };
        } else {
            if (!args) args = {};
            if (typeof args === 'object') args.count = count;
        }