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

            editor.clearSelection();
        },
        multiSelectAction: "forEach"
    },
    killLine: function(editor) {
        editor.pushEmacsMark(null);
        editor.clearSelection();
        var range = editor.getSelectionRange();
        var line = editor.session.getLine(range.start.row);
        range.end.column = line.length;
        line = line.substr(range.start.column);
        
        var foldLine = editor.session.getFoldLine(range.start.row);
        if (foldLine && range.end.row != foldLine.end.row) {
            range.end.row = foldLine.end.row;
            line = "x";
        }
        if (/^\s*$/.test(line)) {
            range.end.row++;
            line = editor.session.getLine(range.end.row);
            range.end.column = /^\s*$/.test(line) ? line.length : 0;
        }
        var text = editor.session.getTextRange(range);
        if (editor.prevOp.command == this)
            exports.killRing.append(text);
        else
            exports.killRing.add(text);

        editor.session.remove(range);
        editor.clearSelection();
    },
    yank: function(editor) {
        editor.onPaste(exports.killRing.get() || '');
        editor.keyBinding.$data.lastCommand = "yank";
    },
    yankRotate: function(editor) {
        if (editor.keyBinding.$data.lastCommand != "yank")
            return;
        editor.undo();
        editor.session.$emacsMarkRing.pop(); // also undo recording mark
        editor.onPaste(exports.killRing.rotate());
        editor.keyBinding.$data.lastCommand = "yank";
    },
    killRegion: {
        exec: function(editor) {
            exports.killRing.add(editor.getCopyText());
            editor.commands.byName.cut.exec(editor);
            editor.setEmacsMark(null);
        },
        readOnly: true,
        multiSelectAction: "forEach"
    },
    killRingSave: {
        exec: function(editor) {

            editor.$handlesEmacsOnCopy = true;
            var marks = editor.session.$emacsMarkRing.slice(),
                deselectedMarks = [];
            exports.killRing.add(editor.getCopyText());

            setTimeout(function() {
                function deselect() {
                    var sel = editor.selection, range = sel.getRange(),
                        pos = sel.isBackwards() ? range.end : range.start;
                    deselectedMarks.push({row: pos.row, column: pos.column});
                    sel.clearSelection();
                }
                editor.$handlesEmacsOnCopy = false;
                if (editor.inMultiSelectMode) editor.forEachSelection({exec: deselect});
                else deselect();
                editor.setEmacsMark(null);
                editor.session.$emacsMarkRing = marks.concat(deselectedMarks.reverse());
            }, 0);
        },
        readOnly: true
    },
    keyboardQuit: function(editor) {
        editor.selection.clearSelection();
        editor.setEmacsMark(null);
        editor.keyBinding.$data.count = null;
    },
    focusCommandLine: function(editor, arg) {
        if (editor.showCommandLine)
            editor.showCommandLine(arg);
    }
});

exports.handler.addCommands(iSearchCommandModule.iSearchStartCommands);

var commands = exports.handler.commands;
commands.yank.isYank = true;
commands.yankRotate.isYank = true;

exports.killRing = {
    $data: [],
    add: function(str) {
        str && this.$data.push(str);
        if (this.$data.length > 30)
            this.$data.shift();
    },
    append: function(str) {
        var idx = this.$data.length - 1;
        var text = this.$data[idx] || "";
        if (str) text += str;
        if (text) this.$data[idx] = text;
    },
    get: function(n) {
        n = n || 1;
        return this.$data.slice(this.$data.length-n, this.$data.length).reverse().join('\n');
    },
    pop: function() {
        if (this.$data.length > 1)
            this.$data.pop();
        return this.get();
    },
    rotate: function() {
        this.$data.unshift(this.$data.pop());
        return this.get();
    }
};