0
|
1 import { Pos } from "../line/pos.js"
|
|
2 import { visualLine } from "../line/spans.js"
|
|
3 import { getLine } from "../line/utils_line.js"
|
|
4 import { charCoords, cursorCoords, displayWidth, paddingH, wrappedLineExtentChar } from "../measurement/position_measurement.js"
|
|
5 import { getOrder, iterateBidiSections } from "../util/bidi.js"
|
|
6 import { elt } from "../util/dom.js"
|
|
7 import { onBlur } from "./focus.js"
|
|
8
|
|
9 export function updateSelection(cm) {
|
|
10 cm.display.input.showSelection(cm.display.input.prepareSelection())
|
|
11 }
|
|
12
|
|
13 export function prepareSelection(cm, primary = true) {
|
|
14 let doc = cm.doc, result = {}
|
|
15 let curFragment = result.cursors = document.createDocumentFragment()
|
|
16 let selFragment = result.selection = document.createDocumentFragment()
|
|
17
|
|
18 let customCursor = cm.options.$customCursor
|
|
19 if (customCursor) primary = true
|
|
20 for (let i = 0; i < doc.sel.ranges.length; i++) {
|
|
21 if (!primary && i == doc.sel.primIndex) continue
|
|
22 let range = doc.sel.ranges[i]
|
|
23 if (range.from().line >= cm.display.viewTo || range.to().line < cm.display.viewFrom) continue
|
|
24 let collapsed = range.empty()
|
|
25 if (customCursor) {
|
|
26 let head = customCursor(cm, range)
|
|
27 if (head) drawSelectionCursor(cm, head, curFragment)
|
|
28 } else if (collapsed || cm.options.showCursorWhenSelecting) {
|
|
29 drawSelectionCursor(cm, range.head, curFragment)
|
|
30 }
|
|
31 if (!collapsed)
|
|
32 drawSelectionRange(cm, range, selFragment)
|
|
33 }
|
|
34 return result
|
|
35 }
|
|
36
|
|
37 // Draws a cursor for the given range
|
|
38 export function drawSelectionCursor(cm, head, output) {
|
|
39 let pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine)
|
|
40
|
|
41 let cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"))
|
|
42 cursor.style.left = pos.left + "px"
|
|
43 cursor.style.top = pos.top + "px"
|
|
44 cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"
|
|
45
|
|
46 if (/\bcm-fat-cursor\b/.test(cm.getWrapperElement().className)) {
|
|
47 let charPos = charCoords(cm, head, "div", null, null)
|
|
48 let width = charPos.right - charPos.left
|
|
49 cursor.style.width = (width > 0 ? width : cm.defaultCharWidth()) + "px"
|
|
50 }
|
|
51
|
|
52 if (pos.other) {
|
|
53 // Secondary cursor, shown when on a 'jump' in bi-directional text
|
|
54 let otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"))
|
|
55 otherCursor.style.display = ""
|
|
56 otherCursor.style.left = pos.other.left + "px"
|
|
57 otherCursor.style.top = pos.other.top + "px"
|
|
58 otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"
|
|
59 }
|
|
60 }
|
|
61
|
|
62 function cmpCoords(a, b) { return a.top - b.top || a.left - b.left }
|
|
63
|
|
64 // Draws the given range as a highlighted selection
|
|
65 function drawSelectionRange(cm, range, output) {
|
|
66 let display = cm.display, doc = cm.doc
|
|
67 let fragment = document.createDocumentFragment()
|
|
68 let padding = paddingH(cm.display), leftSide = padding.left
|
|
69 let rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right
|
|
70 let docLTR = doc.direction == "ltr"
|
|
71
|
|
72 function add(left, top, width, bottom) {
|
|
73 if (top < 0) top = 0
|
|
74 top = Math.round(top)
|
|
75 bottom = Math.round(bottom)
|
|
76 fragment.appendChild(elt("div", null, "CodeMirror-selected", `position: absolute; left: ${left}px;
|
|
77 top: ${top}px; width: ${width == null ? rightSide - left : width}px;
|
|
78 height: ${bottom - top}px`))
|
|
79 }
|
|
80
|
|
81 function drawForLine(line, fromArg, toArg) {
|
|
82 let lineObj = getLine(doc, line)
|
|
83 let lineLen = lineObj.text.length
|
|
84 let start, end
|
|
85 function coords(ch, bias) {
|
|
86 return charCoords(cm, Pos(line, ch), "div", lineObj, bias)
|
|
87 }
|
|
88
|
|
89 function wrapX(pos, dir, side) {
|
|
90 let extent = wrappedLineExtentChar(cm, lineObj, null, pos)
|
|
91 let prop = (dir == "ltr") == (side == "after") ? "left" : "right"
|
|
92 let ch = side == "after" ? extent.begin : extent.end - (/\s/.test(lineObj.text.charAt(extent.end - 1)) ? 2 : 1)
|
|
93 return coords(ch, prop)[prop]
|
|
94 }
|
|
95
|
|
96 let order = getOrder(lineObj, doc.direction)
|
|
97 iterateBidiSections(order, fromArg || 0, toArg == null ? lineLen : toArg, (from, to, dir, i) => {
|
|
98 let ltr = dir == "ltr"
|
|
99 let fromPos = coords(from, ltr ? "left" : "right")
|
|
100 let toPos = coords(to - 1, ltr ? "right" : "left")
|
|
101
|
|
102 let openStart = fromArg == null && from == 0, openEnd = toArg == null && to == lineLen
|
|
103 let first = i == 0, last = !order || i == order.length - 1
|
|
104 if (toPos.top - fromPos.top <= 3) { // Single line
|
|
105 let openLeft = (docLTR ? openStart : openEnd) && first
|
|
106 let openRight = (docLTR ? openEnd : openStart) && last
|
|
107 let left = openLeft ? leftSide : (ltr ? fromPos : toPos).left
|
|
108 let right = openRight ? rightSide : (ltr ? toPos : fromPos).right
|
|
109 add(left, fromPos.top, right - left, fromPos.bottom)
|
|
110 } else { // Multiple lines
|
|
111 let topLeft, topRight, botLeft, botRight
|
|
112 if (ltr) {
|
|
113 topLeft = docLTR && openStart && first ? leftSide : fromPos.left
|
|
114 topRight = docLTR ? rightSide : wrapX(from, dir, "before")
|
|
115 botLeft = docLTR ? leftSide : wrapX(to, dir, "after")
|
|
116 botRight = docLTR && openEnd && last ? rightSide : toPos.right
|
|
117 } else {
|
|
118 topLeft = !docLTR ? leftSide : wrapX(from, dir, "before")
|
|
119 topRight = !docLTR && openStart && first ? rightSide : fromPos.right
|
|
120 botLeft = !docLTR && openEnd && last ? leftSide : toPos.left
|
|
121 botRight = !docLTR ? rightSide : wrapX(to, dir, "after")
|
|
122 }
|
|
123 add(topLeft, fromPos.top, topRight - topLeft, fromPos.bottom)
|
|
124 if (fromPos.bottom < toPos.top) add(leftSide, fromPos.bottom, null, toPos.top)
|
|
125 add(botLeft, toPos.top, botRight - botLeft, toPos.bottom)
|
|
126 }
|
|
127
|
|
128 if (!start || cmpCoords(fromPos, start) < 0) start = fromPos
|
|
129 if (cmpCoords(toPos, start) < 0) start = toPos
|
|
130 if (!end || cmpCoords(fromPos, end) < 0) end = fromPos
|
|
131 if (cmpCoords(toPos, end) < 0) end = toPos
|
|
132 })
|
|
133 return {start: start, end: end}
|
|
134 }
|
|
135
|
|
136 let sFrom = range.from(), sTo = range.to()
|
|
137 if (sFrom.line == sTo.line) {
|
|
138 drawForLine(sFrom.line, sFrom.ch, sTo.ch)
|
|
139 } else {
|
|
140 let fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line)
|
|
141 let singleVLine = visualLine(fromLine) == visualLine(toLine)
|
|
142 let leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end
|
|
143 let rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start
|
|
144 if (singleVLine) {
|
|
145 if (leftEnd.top < rightStart.top - 2) {
|
|
146 add(leftEnd.right, leftEnd.top, null, leftEnd.bottom)
|
|
147 add(leftSide, rightStart.top, rightStart.left, rightStart.bottom)
|
|
148 } else {
|
|
149 add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom)
|
|
150 }
|
|
151 }
|
|
152 if (leftEnd.bottom < rightStart.top)
|
|
153 add(leftSide, leftEnd.bottom, null, rightStart.top)
|
|
154 }
|
|
155
|
|
156 output.appendChild(fragment)
|
|
157 }
|
|
158
|
|
159 // Cursor-blinking
|
|
160 export function restartBlink(cm) {
|
|
161 if (!cm.state.focused) return
|
|
162 let display = cm.display
|
|
163 clearInterval(display.blinker)
|
|
164 let on = true
|
|
165 display.cursorDiv.style.visibility = ""
|
|
166 if (cm.options.cursorBlinkRate > 0)
|
|
167 display.blinker = setInterval(() => {
|
|
168 if (!cm.hasFocus()) onBlur(cm)
|
|
169 display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"
|
|
170 }, cm.options.cursorBlinkRate)
|
|
171 else if (cm.options.cursorBlinkRate < 0)
|
|
172 display.cursorDiv.style.visibility = "hidden"
|
|
173 }
|