browser/components/sessionstore/src/PageStyle.jsm@6474c204b198 (annotated)
browser/components/sessionstore/src/PageStyle.jsm
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
| michael@0 | 3 | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | "use strict"; |
| michael@0 | 6 | |
| michael@0 | 7 | this.EXPORTED_SYMBOLS = ["PageStyle"]; |
| michael@0 | 8 | |
| michael@0 | 9 | const Ci = Components.interfaces; |
| michael@0 | 10 | |
| michael@0 | 11 | /** |
| michael@0 | 12 | * The external API exported by this module. |
| michael@0 | 13 | */ |
| michael@0 | 14 | this.PageStyle = Object.freeze({ |
| michael@0 | 15 | collect: function (docShell, frameTree) { |
| michael@0 | 16 | return PageStyleInternal.collect(docShell, frameTree); |
| michael@0 | 17 | }, |
| michael@0 | 18 | |
| michael@0 | 19 | restore: function (docShell, frameList, pageStyle) { |
| michael@0 | 20 | PageStyleInternal.restore(docShell, frameList, pageStyle); |
| michael@0 | 21 | }, |
| michael@0 | 22 | |
| michael@0 | 23 | restoreTree: function (docShell, data) { |
| michael@0 | 24 | PageStyleInternal.restoreTree(docShell, data); |
| michael@0 | 25 | } |
| michael@0 | 26 | }); |
| michael@0 | 27 | |
| michael@0 | 28 | // Signifies that author style level is disabled for the page. |
| michael@0 | 29 | const NO_STYLE = "_nostyle"; |
| michael@0 | 30 | |
| michael@0 | 31 | let PageStyleInternal = { |
| michael@0 | 32 | /** |
| michael@0 | 33 | * Collects the selected style sheet sets for all reachable frames. |
| michael@0 | 34 | */ |
| michael@0 | 35 | collect: function (docShell, frameTree) { |
| michael@0 | 36 | let result = frameTree.map(({document: doc}) => { |
| michael@0 | 37 | let style; |
| michael@0 | 38 | |
| michael@0 | 39 | if (doc) { |
| michael@0 | 40 | // http://dev.w3.org/csswg/cssom/#persisting-the-selected-css-style-sheet-set |
| michael@0 | 41 | style = doc.selectedStyleSheetSet || doc.lastStyleSheetSet; |
| michael@0 | 42 | } |
| michael@0 | 43 | |
| michael@0 | 44 | return style ? {pageStyle: style} : null; |
| michael@0 | 45 | }); |
| michael@0 | 46 | |
| michael@0 | 47 | let markupDocumentViewer = |
| michael@0 | 48 | docShell.contentViewer.QueryInterface(Ci.nsIMarkupDocumentViewer); |
| michael@0 | 49 | |
| michael@0 | 50 | if (markupDocumentViewer.authorStyleDisabled) { |
| michael@0 | 51 | result = result || {}; |
| michael@0 | 52 | result.disabled = true; |
| michael@0 | 53 | } |
| michael@0 | 54 | |
| michael@0 | 55 | return result && Object.keys(result).length ? result : null; |
| michael@0 | 56 | }, |
| michael@0 | 57 | |
| michael@0 | 58 | /** |
| michael@0 | 59 | * Restore the selected style sheet of all the frames in frameList |
| michael@0 | 60 | * to match |pageStyle|. |
| michael@0 | 61 | * @param docShell the root docshell of all the frames |
| michael@0 | 62 | * @param frameList a list of [frame, data] pairs, where frame is a |
| michael@0 | 63 | * DOM window and data is the session restore data associated with |
| michael@0 | 64 | * it. |
| michael@0 | 65 | * @param pageStyle the title of the style sheet to apply |
| michael@0 | 66 | */ |
| michael@0 | 67 | restore: function (docShell, frameList, pageStyle) { |
| michael@0 | 68 | let disabled = pageStyle == NO_STYLE; |
| michael@0 | 69 | |
| michael@0 | 70 | let markupDocumentViewer = |
| michael@0 | 71 | docShell.contentViewer.QueryInterface(Ci.nsIMarkupDocumentViewer); |
| michael@0 | 72 | markupDocumentViewer.authorStyleDisabled = disabled; |
| michael@0 | 73 | |
| michael@0 | 74 | for (let [frame, data] of frameList) { |
| michael@0 | 75 | Array.forEach(frame.document.styleSheets, function(aSS) { |
| michael@0 | 76 | aSS.disabled = aSS.title && aSS.title != pageStyle; |
| michael@0 | 77 | }); |
| michael@0 | 78 | } |
| michael@0 | 79 | }, |
| michael@0 | 80 | |
| michael@0 | 81 | /** |
| michael@0 | 82 | * Restores pageStyle data for the current frame hierarchy starting at the |
| michael@0 | 83 | * |docShell's| current DOMWindow using the given pageStyle |data|. |
| michael@0 | 84 | * |
| michael@0 | 85 | * Warning: If the current frame hierarchy doesn't match that of the given |
| michael@0 | 86 | * |data| object we will silently discard data for unreachable frames. We may |
| michael@0 | 87 | * as well assign page styles to the wrong frames if some were reordered or |
| michael@0 | 88 | * removed. |
| michael@0 | 89 | * |
| michael@0 | 90 | * @param docShell (nsIDocShell) |
| michael@0 | 91 | * @param data (object) |
| michael@0 | 92 | * { |
| michael@0 | 93 | * disabled: true, // when true, author styles will be disabled |
| michael@0 | 94 | * pageStyle: "Dusk", |
| michael@0 | 95 | * children: [ |
| michael@0 | 96 | * null, |
| michael@0 | 97 | * {pageStyle: "Mozilla", children: [ ... ]} |
| michael@0 | 98 | * ] |
| michael@0 | 99 | * } |
| michael@0 | 100 | */ |
| michael@0 | 101 | restoreTree: function (docShell, data) { |
| michael@0 | 102 | let disabled = data.disabled || false; |
| michael@0 | 103 | let markupDocumentViewer = |
| michael@0 | 104 | docShell.contentViewer.QueryInterface(Ci.nsIMarkupDocumentViewer); |
| michael@0 | 105 | markupDocumentViewer.authorStyleDisabled = disabled; |
| michael@0 | 106 | |
| michael@0 | 107 | function restoreFrame(root, data) { |
| michael@0 | 108 | if (data.hasOwnProperty("pageStyle")) { |
| michael@0 | 109 | root.document.selectedStyleSheetSet = data.pageStyle; |
| michael@0 | 110 | } |
| michael@0 | 111 | |
| michael@0 | 112 | if (!data.hasOwnProperty("children")) { |
| michael@0 | 113 | return; |
| michael@0 | 114 | } |
| michael@0 | 115 | |
| michael@0 | 116 | let frames = root.frames; |
| michael@0 | 117 | data.children.forEach((child, index) => { |
| michael@0 | 118 | if (child && index < frames.length) { |
| michael@0 | 119 | restoreFrame(frames[index], child); |
| michael@0 | 120 | } |
| michael@0 | 121 | }); |
| michael@0 | 122 | } |
| michael@0 | 123 | |
| michael@0 | 124 | let ifreq = docShell.QueryInterface(Ci.nsIInterfaceRequestor); |
| michael@0 | 125 | restoreFrame(ifreq.getInterface(Ci.nsIDOMWindow), data); |
| michael@0 | 126 | } |
| michael@0 | 127 | }; |
