mirror of
https://github.com/Jermolene/TiddlyWiki5
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651619076a
* add override saver * rename 'override' to 'custom' and use the global instead of introducing a new one
61 lines
1.5 KiB
JavaScript
61 lines
1.5 KiB
JavaScript
/*\
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title: $:/core/modules/savers/custom.js
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type: application/javascript
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module-type: saver
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Looks for `window.$tw.customSaver` first on the current window, then
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on the parent window (of an iframe). If present, the saver must define
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save: function(text,method,callback) { ... }
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and the saver may define
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priority: number
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var findSaver = function(window) {
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try {
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return window && window.$tw && window.$tw.customSaver;
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} catch (err) {
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// Catching the exception is the most reliable way to detect cross-origin iframe errors.
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// For example, instead of saying that `window.parent.$tw` is undefined, Firefox will throw
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// Uncaught DOMException: Permission denied to access property "$tw" on cross-origin object
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console.log({ msg: "custom saver is disabled", reason: err });
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return null;
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}
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}
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var saver = findSaver(window) || findSaver(window.parent) || {};
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var CustomSaver = function(wiki) {
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};
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CustomSaver.prototype.save = function(text,method,callback) {
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return saver.save(text, method, callback);
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};
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/*
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Information about this saver
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*/
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CustomSaver.prototype.info = {
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name: "custom",
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priority: saver.priority || 4000,
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capabilities: ["save","autosave"]
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};
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/*
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Static method that returns true if this saver is capable of working
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*/
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exports.canSave = function(wiki) {
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return !!(saver.save);
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};
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/*
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Create an instance of this saver
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*/
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exports.create = function(wiki) {
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return new CustomSaver(wiki);
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};
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})();
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