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comparison .cms/lib/codemirror/src/display/Display.js @ 0:78edf6b517a0 draft
24.10
author | Coffee CMS <info@coffee-cms.ru> |
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date | Fri, 11 Oct 2024 22:40:23 +0000 |
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-1:000000000000 | 0:78edf6b517a0 |
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1 import { gecko, ie, ie_version, mobile, webkit, chrome, chrome_version } from "../util/browser.js" | |
2 import { elt, eltP } from "../util/dom.js" | |
3 import { scrollerGap } from "../util/misc.js" | |
4 import { getGutters, renderGutters } from "./gutters.js" | |
5 | |
6 // The display handles the DOM integration, both for input reading | |
7 // and content drawing. It holds references to DOM nodes and | |
8 // display-related state. | |
9 | |
10 export function Display(place, doc, input, options) { | |
11 let d = this | |
12 this.input = input | |
13 | |
14 // Covers bottom-right square when both scrollbars are present. | |
15 d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler") | |
16 d.scrollbarFiller.setAttribute("cm-not-content", "true") | |
17 // Covers bottom of gutter when coverGutterNextToScrollbar is on | |
18 // and h scrollbar is present. | |
19 d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler") | |
20 d.gutterFiller.setAttribute("cm-not-content", "true") | |
21 // Will contain the actual code, positioned to cover the viewport. | |
22 d.lineDiv = eltP("div", null, "CodeMirror-code") | |
23 // Elements are added to these to represent selection and cursors. | |
24 d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1") | |
25 d.cursorDiv = elt("div", null, "CodeMirror-cursors") | |
26 // A visibility: hidden element used to find the size of things. | |
27 d.measure = elt("div", null, "CodeMirror-measure") | |
28 // When lines outside of the viewport are measured, they are drawn in this. | |
29 d.lineMeasure = elt("div", null, "CodeMirror-measure") | |
30 // Wraps everything that needs to exist inside the vertically-padded coordinate system | |
31 d.lineSpace = eltP("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv], | |
32 null, "position: relative; outline: none") | |
33 let lines = eltP("div", [d.lineSpace], "CodeMirror-lines") | |
34 // Moved around its parent to cover visible view. | |
35 d.mover = elt("div", [lines], null, "position: relative") | |
36 // Set to the height of the document, allowing scrolling. | |
37 d.sizer = elt("div", [d.mover], "CodeMirror-sizer") | |
38 d.sizerWidth = null | |
39 // Behavior of elts with overflow: auto and padding is | |
40 // inconsistent across browsers. This is used to ensure the | |
41 // scrollable area is big enough. | |
42 d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;") | |
43 // Will contain the gutters, if any. | |
44 d.gutters = elt("div", null, "CodeMirror-gutters") | |
45 d.lineGutter = null | |
46 // Actual scrollable element. | |
47 d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll") | |
48 d.scroller.setAttribute("tabIndex", "-1") | |
49 // The element in which the editor lives. | |
50 d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror") | |
51 // See #6982. FIXME remove when this has been fixed for a while in Chrome | |
52 if (chrome && chrome_version >= 105) d.wrapper.style.clipPath = "inset(0px)" | |
53 | |
54 // This attribute is respected by automatic translation systems such as Google Translate, | |
55 // and may also be respected by tools used by human translators. | |
56 d.wrapper.setAttribute('translate', 'no') | |
57 | |
58 // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported) | |
59 if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0 } | |
60 if (!webkit && !(gecko && mobile)) d.scroller.draggable = true | |
61 | |
62 if (place) { | |
63 if (place.appendChild) place.appendChild(d.wrapper) | |
64 else place(d.wrapper) | |
65 } | |
66 | |
67 // Current rendered range (may be bigger than the view window). | |
68 d.viewFrom = d.viewTo = doc.first | |
69 d.reportedViewFrom = d.reportedViewTo = doc.first | |
70 // Information about the rendered lines. | |
71 d.view = [] | |
72 d.renderedView = null | |
73 // Holds info about a single rendered line when it was rendered | |
74 // for measurement, while not in view. | |
75 d.externalMeasured = null | |
76 // Empty space (in pixels) above the view | |
77 d.viewOffset = 0 | |
78 d.lastWrapHeight = d.lastWrapWidth = 0 | |
79 d.updateLineNumbers = null | |
80 | |
81 d.nativeBarWidth = d.barHeight = d.barWidth = 0 | |
82 d.scrollbarsClipped = false | |
83 | |
84 // Used to only resize the line number gutter when necessary (when | |
85 // the amount of lines crosses a boundary that makes its width change) | |
86 d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null | |
87 // Set to true when a non-horizontal-scrolling line widget is | |
88 // added. As an optimization, line widget aligning is skipped when | |
89 // this is false. | |
90 d.alignWidgets = false | |
91 | |
92 d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null | |
93 | |
94 // Tracks the maximum line length so that the horizontal scrollbar | |
95 // can be kept static when scrolling. | |
96 d.maxLine = null | |
97 d.maxLineLength = 0 | |
98 d.maxLineChanged = false | |
99 | |
100 // Used for measuring wheel scrolling granularity | |
101 d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null | |
102 | |
103 // True when shift is held down. | |
104 d.shift = false | |
105 | |
106 // Used to track whether anything happened since the context menu | |
107 // was opened. | |
108 d.selForContextMenu = null | |
109 | |
110 d.activeTouch = null | |
111 | |
112 d.gutterSpecs = getGutters(options.gutters, options.lineNumbers) | |
113 renderGutters(d) | |
114 | |
115 input.init(d) | |
116 } |