~ubuntu-branches/debian/stretch/downthemall/stretch

/* You may find the license in the LICENSE file */

 

const EXPORTED_SYMBOLS = ['FileExtensionSheet'];

 

const Cc = Components.classes;

const Ci = Components.interfaces;

const Cr = Components.results;

const Cu = Components.utils;

const Exception = Components.Exception;

 

Cu.import("resource://dta/utils.jsm");

Cu.import("resource://dta/support/icons.jsm");

Cu.import("resource://dta/support/timers.jsm");

 

const Timers = new TimerManager();

 

ServiceGetter(this, "Atoms", "@mozilla.org/atom-service;1", "nsIAtomService");

 

extendString(String);

 

function FileExtensionSheet(window) {

        this._windowUtils = window.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);

        

        let document = window.document;

        this._stylesheet = null;

        try {

                for each (let ss in document.styleSheets) {

                        Debug.log("sheet: " + ss.href);

                        if (/^chrome:\/\/dta\//.test(ss.href)) {

                                this._stylesheet = ss;

                                Debug.log("found stylesheet " + ss.href + ", rules: " + ss.cssRules.length);

                                break;

                        }

                }

                if (!this._stylesheet) {

                        throw new Exception("didn't find stylesheet");

                }

        }

        catch (ex) {

                Debug.log("sheet:", ex);

        }

 

        this._entries = {};

}

 

FileExtensionSheet.prototype = {

        getAtom: function FES_getAtom(fileName, metalink) {

                let ext = fileName.getExtension();

                if (!ext) {

                        ext = 'unknown';

                }

                if (metalink) {

                        ext = 'metalink';

                }

                let key = 'ext:' + ext;

                let entry = this._entries[key];

                if (!entry) {

                        entry = Atoms.getAtom("icon" + newUUIDString().replace(/\W/g, ''));

                        let rule = 'treechildren::-moz-tree-image(iconic,' 

                                + entry.toString()

                                + ') { list-style-image: url('

                                + getIcon('file.' + ext, metalink || ext == 'metalink')

                                + ') !important; }';

                        this._stylesheet.insertRule(rule, this._stylesheet.cssRules.length);

                        Debug.log("sheet: " + rule);

                        if (!this._timer) {

                                // this is a moz-2 hack, as it will otherwise not correctly redraw!

                                this._timer = Timers.createOneshot(0, this._updateSheet, this);

                        }

                        this._entries[key] = entry;

                }

                return entry;

        },

        _updateSheet: function FES__updateSheet() {

                delete this._timer;

                this._windowUtils.redraw();

        }

};