import Ember from 'ember';
/* global key */

// Configure KeyMaster to respond to all shortcuts,
// even inside of
// input, textarea, and select.
key.filter = function () {
    return true;
};

key.setScope('default');
/**
 * Only routes can implement shortcuts.
 * If you need to trigger actions on the controller,
 * simply call them with `this.get('controller').send('action')`.
 *
 * To implement shortcuts, add this mixin to your `extend()`,
 * and implement a `shortcuts` hash.
 * In this hash, keys are shortcut combinations and values are route action names.
 *  (see [keymaster docs](https://github.com/madrobby/keymaster/blob/master/README.markdown)),
 *
 * ```javascript
 * shortcuts: {
 *     'ctrl+s, command+s': 'save',
 *     'ctrl+alt+z': 'toggleZenMode'
 * }
 * ```
 * For more complex actions, shortcuts can instead have their value
 * be an object like {action, options}
 * ```javascript
 * shortcuts: {
 *      'ctrl+k': {action: 'markdownShortcut', options: 'createLink'}
 * }
 * ```
 * You can set the scope of your shortcut by passing a scope property.
 * ```javascript
 * shortcuts : {
 *   'enter': {action : 'confirmModal', scope: 'modal'}
 * }
 * ```
 * If you don't specify a scope, we use a default scope called "default".
 * To have all your shortcut work in all scopes, give it the scope "all".
 * Find out more at the keymaster docs
 */
export default Ember.Mixin.create({
    registerShortcuts: function () {
        var self = this,
            shortcuts = this.get('shortcuts');

        Object.keys(shortcuts).forEach(function (shortcut) {
            var scope = shortcuts[shortcut].scope || 'default',
                action = shortcuts[shortcut],
                options;

            if (Ember.typeOf(action) !== 'string') {
                options = action.options;
                action = action.action;
            }

            key(shortcut, scope, function (event) {
                // stop things like ctrl+s from actually opening a save dialogue
                event.preventDefault();
                self.send(action, options);
            });
        });
    },

    removeShortcuts: function () {
        var shortcuts = this.get('shortcuts');

        Object.keys(shortcuts).forEach(function (shortcut) {
            var scope = shortcuts[shortcut].scope || 'default';
            key.unbind(shortcut, scope);
        });
    },

    activate: function () {
        this._super();
        this.registerShortcuts();
    },

    deactivate: function () {
        this._super();
        this.removeShortcuts();
    }
});