The Tor Browser / file comparison
comparison: browser/components/sessionstore/src/PageStyle.jsm
browser/components/sessionstore/src/PageStyle.jsm
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:e74858a09a44 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 3 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 "use strict"; | |
| 6 | |
| 7 this.EXPORTED_SYMBOLS = ["PageStyle"]; | |
| 8 | |
| 9 const Ci = Components.interfaces; | |
| 10 | |
| 11 /** | |
| 12 * The external API exported by this module. | |
| 13 */ | |
| 14 this.PageStyle = Object.freeze({ | |
| 15 collect: function (docShell, frameTree) { | |
| 16 return PageStyleInternal.collect(docShell, frameTree); | |
| 17 }, | |
| 18 | |
| 19 restore: function (docShell, frameList, pageStyle) { | |
| 20 PageStyleInternal.restore(docShell, frameList, pageStyle); | |
| 21 }, | |
| 22 | |
| 23 restoreTree: function (docShell, data) { | |
| 24 PageStyleInternal.restoreTree(docShell, data); | |
| 25 } | |
| 26 }); | |
| 27 | |
| 28 // Signifies that author style level is disabled for the page. | |
| 29 const NO_STYLE = "_nostyle"; | |
| 30 | |
| 31 let PageStyleInternal = { | |
| 32 /** | |
| 33 * Collects the selected style sheet sets for all reachable frames. | |
| 34 */ | |
| 35 collect: function (docShell, frameTree) { | |
| 36 let result = frameTree.map(({document: doc}) => { | |
| 37 let style; | |
| 38 | |
| 39 if (doc) { | |
| 40 // http://dev.w3.org/csswg/cssom/#persisting-the-selected-css-style-sheet-set | |
| 41 style = doc.selectedStyleSheetSet || doc.lastStyleSheetSet; | |
| 42 } | |
| 43 | |
| 44 return style ? {pageStyle: style} : null; | |
| 45 }); | |
| 46 | |
| 47 let markupDocumentViewer = | |
| 48 docShell.contentViewer.QueryInterface(Ci.nsIMarkupDocumentViewer); | |
| 49 | |
| 50 if (markupDocumentViewer.authorStyleDisabled) { | |
| 51 result = result || {}; | |
| 52 result.disabled = true; | |
| 53 } | |
| 54 | |
| 55 return result && Object.keys(result).length ? result : null; | |
| 56 }, | |
| 57 | |
| 58 /** | |
| 59 * Restore the selected style sheet of all the frames in frameList | |
| 60 * to match |pageStyle|. | |
| 61 * @param docShell the root docshell of all the frames | |
| 62 * @param frameList a list of [frame, data] pairs, where frame is a | |
| 63 * DOM window and data is the session restore data associated with | |
| 64 * it. | |
| 65 * @param pageStyle the title of the style sheet to apply | |
| 66 */ | |
| 67 restore: function (docShell, frameList, pageStyle) { | |
| 68 let disabled = pageStyle == NO_STYLE; | |
| 69 | |
| 70 let markupDocumentViewer = | |
| 71 docShell.contentViewer.QueryInterface(Ci.nsIMarkupDocumentViewer); | |
| 72 markupDocumentViewer.authorStyleDisabled = disabled; | |
| 73 | |
| 74 for (let [frame, data] of frameList) { | |
| 75 Array.forEach(frame.document.styleSheets, function(aSS) { | |
| 76 aSS.disabled = aSS.title && aSS.title != pageStyle; | |
| 77 }); | |
| 78 } | |
| 79 }, | |
| 80 | |
| 81 /** | |
| 82 * Restores pageStyle data for the current frame hierarchy starting at the | |
| 83 * |docShell's| current DOMWindow using the given pageStyle |data|. | |
| 84 * | |
| 85 * Warning: If the current frame hierarchy doesn't match that of the given | |
| 86 * |data| object we will silently discard data for unreachable frames. We may | |
| 87 * as well assign page styles to the wrong frames if some were reordered or | |
| 88 * removed. | |
| 89 * | |
| 90 * @param docShell (nsIDocShell) | |
| 91 * @param data (object) | |
| 92 * { | |
| 93 * disabled: true, // when true, author styles will be disabled | |
| 94 * pageStyle: "Dusk", | |
| 95 * children: [ | |
| 96 * null, | |
| 97 * {pageStyle: "Mozilla", children: [ ... ]} | |
| 98 * ] | |
| 99 * } | |
| 100 */ | |
| 101 restoreTree: function (docShell, data) { | |
| 102 let disabled = data.disabled || false; | |
| 103 let markupDocumentViewer = | |
| 104 docShell.contentViewer.QueryInterface(Ci.nsIMarkupDocumentViewer); | |
| 105 markupDocumentViewer.authorStyleDisabled = disabled; | |
| 106 | |
| 107 function restoreFrame(root, data) { | |
| 108 if (data.hasOwnProperty("pageStyle")) { | |
| 109 root.document.selectedStyleSheetSet = data.pageStyle; | |
| 110 } | |
| 111 | |
| 112 if (!data.hasOwnProperty("children")) { | |
| 113 return; | |
| 114 } | |
| 115 | |
| 116 let frames = root.frames; | |
| 117 data.children.forEach((child, index) => { | |
| 118 if (child && index < frames.length) { | |
| 119 restoreFrame(frames[index], child); | |
| 120 } | |
| 121 }); | |
| 122 } | |
| 123 | |
| 124 let ifreq = docShell.QueryInterface(Ci.nsIInterfaceRequestor); | |
| 125 restoreFrame(ifreq.getInterface(Ci.nsIDOMWindow), data); | |
| 126 } | |
| 127 }; |
