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- import { gecko, ie, ie_version, mobile, webkit, chrome, chrome_version } from "../util/browser.js"
- import { elt, eltP } from "../util/dom.js"
- import { scrollerGap } from "../util/misc.js"
- import { getGutters, renderGutters } from "./gutters.js"
- // The display handles the DOM integration, both for input reading
- // and content drawing. It holds references to DOM nodes and
- // display-related state.
- export function Display(place, doc, input, options) {
- let d = this
- this.input = input
- // Covers bottom-right square when both scrollbars are present.
- d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler")
- d.scrollbarFiller.setAttribute("cm-not-content", "true")
- // Covers bottom of gutter when coverGutterNextToScrollbar is on
- // and h scrollbar is present.
- d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler")
- d.gutterFiller.setAttribute("cm-not-content", "true")
- // Will contain the actual code, positioned to cover the viewport.
- d.lineDiv = eltP("div", null, "CodeMirror-code")
- // Elements are added to these to represent selection and cursors.
- d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1")
- d.cursorDiv = elt("div", null, "CodeMirror-cursors")
- // A visibility: hidden element used to find the size of things.
- d.measure = elt("div", null, "CodeMirror-measure")
- // When lines outside of the viewport are measured, they are drawn in this.
- d.lineMeasure = elt("div", null, "CodeMirror-measure")
- // Wraps everything that needs to exist inside the vertically-padded coordinate system
- d.lineSpace = eltP("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
- null, "position: relative; outline: none")
- let lines = eltP("div", [d.lineSpace], "CodeMirror-lines")
- // Moved around its parent to cover visible view.
- d.mover = elt("div", [lines], null, "position: relative")
- // Set to the height of the document, allowing scrolling.
- d.sizer = elt("div", [d.mover], "CodeMirror-sizer")
- d.sizerWidth = null
- // Behavior of elts with overflow: auto and padding is
- // inconsistent across browsers. This is used to ensure the
- // scrollable area is big enough.
- d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;")
- // Will contain the gutters, if any.
- d.gutters = elt("div", null, "CodeMirror-gutters")
- d.lineGutter = null
- // Actual scrollable element.
- d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll")
- d.scroller.setAttribute("tabIndex", "-1")
- // The element in which the editor lives.
- d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror")
- // See #6982. FIXME remove when this has been fixed for a while in Chrome
- if (chrome && chrome_version === 105) d.wrapper.style.clipPath = "inset(0px)"
- // This attribute is respected by automatic translation systems such as Google Translate,
- // and may also be respected by tools used by human translators.
- d.wrapper.setAttribute('translate', 'no')
- // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
- if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0 }
- if (!webkit && !(gecko && mobile)) d.scroller.draggable = true
- if (place) {
- if (place.appendChild) place.appendChild(d.wrapper)
- else place(d.wrapper)
- }
- // Current rendered range (may be bigger than the view window).
- d.viewFrom = d.viewTo = doc.first
- d.reportedViewFrom = d.reportedViewTo = doc.first
- // Information about the rendered lines.
- d.view = []
- d.renderedView = null
- // Holds info about a single rendered line when it was rendered
- // for measurement, while not in view.
- d.externalMeasured = null
- // Empty space (in pixels) above the view
- d.viewOffset = 0
- d.lastWrapHeight = d.lastWrapWidth = 0
- d.updateLineNumbers = null
- d.nativeBarWidth = d.barHeight = d.barWidth = 0
- d.scrollbarsClipped = false
- // Used to only resize the line number gutter when necessary (when
- // the amount of lines crosses a boundary that makes its width change)
- d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null
- // Set to true when a non-horizontal-scrolling line widget is
- // added. As an optimization, line widget aligning is skipped when
- // this is false.
- d.alignWidgets = false
- d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null
- // Tracks the maximum line length so that the horizontal scrollbar
- // can be kept static when scrolling.
- d.maxLine = null
- d.maxLineLength = 0
- d.maxLineChanged = false
- // Used for measuring wheel scrolling granularity
- d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null
- // True when shift is held down.
- d.shift = false
- // Used to track whether anything happened since the context menu
- // was opened.
- d.selForContextMenu = null
- d.activeTouch = null
- d.gutterSpecs = getGutters(options.gutters, options.lineNumbers)
- renderGutters(d)
- input.init(d)
- }
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