diff options
Diffstat (limited to 'components/newtab/updater.js')
| -rw-r--r-- | components/newtab/updater.js | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/components/newtab/updater.js b/components/newtab/updater.js deleted file mode 100644 index 2bab74d..0000000 --- a/components/newtab/updater.js +++ /dev/null @@ -1,177 +0,0 @@ -#ifdef 0 -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this file, - * You can obtain one at http://mozilla.org/MPL/2.0/. */ -#endif - -/** - * This singleton provides functionality to update the current grid to a new - * set of pinned and blocked sites. It adds, moves and removes sites. - */ -var gUpdater = { - /** - * Updates the current grid according to its pinned and blocked sites. - * This removes old, moves existing and creates new sites to fill gaps. - * @param aCallback The callback to call when finished. - */ - updateGrid: function Updater_updateGrid(aCallback) { - let links = gLinks.getLinks().slice(0, gGrid.cells.length); - - // Find all sites that remain in the grid. - let sites = this._findRemainingSites(links); - - // Remove sites that are no longer in the grid. - this._removeLegacySites(sites, () => { - // Freeze all site positions so that we can move their DOM nodes around - // without any visual impact. - this._freezeSitePositions(sites); - - // Move the sites' DOM nodes to their new position in the DOM. This will - // have no visual effect as all the sites have been frozen and will - // remain in their current position. - this._moveSiteNodes(sites); - - // Now it's time to animate the sites actually moving to their new - // positions. - this._rearrangeSites(sites, () => { - // Try to fill empty cells and finish. - this._fillEmptyCells(links, aCallback); - - // Update other pages that might be open to keep them synced. - gAllPages.update(gPage); - }); - }); - }, - - /** - * Takes an array of links and tries to correlate them to sites contained in - * the current grid. If no corresponding site can be found (i.e. the link is - * new and a site will be created) then just set it to null. - * @param aLinks The array of links to find sites for. - * @return Array of sites mapped to the given links (can contain null values). - */ - _findRemainingSites: function Updater_findRemainingSites(aLinks) { - let map = {}; - - // Create a map to easily retrieve the site for a given URL. - gGrid.sites.forEach(function (aSite) { - if (aSite) - map[aSite.url] = aSite; - }); - - // Map each link to its corresponding site, if any. - return aLinks.map(function (aLink) { - return aLink && (aLink.url in map) && map[aLink.url]; - }); - }, - - /** - * Freezes the given sites' positions. - * @param aSites The array of sites to freeze. - */ - _freezeSitePositions: function Updater_freezeSitePositions(aSites) { - aSites.forEach(function (aSite) { - if (aSite) - gTransformation.freezeSitePosition(aSite); - }); - }, - - /** - * Moves the given sites' DOM nodes to their new positions. - * @param aSites The array of sites to move. - */ - _moveSiteNodes: function Updater_moveSiteNodes(aSites) { - let cells = gGrid.cells; - - // Truncate the given array of sites to not have more sites than cells. - // This can happen when the user drags a bookmark (or any other new kind - // of link) onto the grid. - let sites = aSites.slice(0, cells.length); - - sites.forEach(function (aSite, aIndex) { - let cell = cells[aIndex]; - let cellSite = cell.site; - - // The site's position didn't change. - if (!aSite || cellSite != aSite) { - let cellNode = cell.node; - - // Empty the cell if necessary. - if (cellSite) - cellNode.removeChild(cellSite.node); - - // Put the new site in place, if any. - if (aSite) - cellNode.appendChild(aSite.node); - } - }, this); - }, - - /** - * Rearranges the given sites and slides them to their new positions. - * @param aSites The array of sites to re-arrange. - * @param aCallback The callback to call when finished. - */ - _rearrangeSites: function Updater_rearrangeSites(aSites, aCallback) { - let options = {callback: aCallback, unfreeze: true}; - gTransformation.rearrangeSites(aSites, options); - }, - - /** - * Removes all sites from the grid that are not in the given links array or - * exceed the grid. - * @param aSites The array of sites remaining in the grid. - * @param aCallback The callback to call when finished. - */ - _removeLegacySites: function Updater_removeLegacySites(aSites, aCallback) { - let batch = []; - - // Delete sites that were removed from the grid. - gGrid.sites.forEach(function (aSite) { - // The site must be valid and not in the current grid. - if (!aSite || aSites.indexOf(aSite) != -1) - return; - - batch.push(new Promise(resolve => { - // Fade out the to-be-removed site. - gTransformation.hideSite(aSite, function () { - let node = aSite.node; - - // Remove the site from the DOM. - node.parentNode.removeChild(node); - resolve(); - }); - })); - }); - - Promise.all(batch).then(aCallback); - }, - - /** - * Tries to fill empty cells with new links if available. - * @param aLinks The array of links. - * @param aCallback The callback to call when finished. - */ - _fillEmptyCells: function Updater_fillEmptyCells(aLinks, aCallback) { - let {cells, sites} = gGrid; - - // Find empty cells and fill them. - Promise.all(sites.map((aSite, aIndex) => { - if (aSite || !aLinks[aIndex]) - return null; - - return new Promise(resolve => { - // Create the new site and fade it in. - let site = gGrid.createSite(aLinks[aIndex], cells[aIndex]); - - // Set the site's initial opacity to zero. - site.node.style.opacity = 0; - - // Flush all style changes for the dynamically inserted site to make - // the fade-in transition work. - window.getComputedStyle(site.node).opacity; - gTransformation.showSite(site, resolve); - }); - })).then(aCallback).catch(console.exception); - } -}; |