/var/www/coffee-cms.ru/html: .cms/lib/codemirror/src/edit/mouse_events.js comparison

comparison .cms/lib/codemirror/src/edit/mouse_events.js @ 0:78edf6b517a0 draft

24.10

author	Coffee CMS <info@coffee-cms.ru>
date	Fri, 11 Oct 2024 22:40:23 +0000
parents
children

comparison

equal deleted inserted replaced

--1:000000000000
+:78edf6b517a0
+import { delayBlurEvent, ensureFocus } from "../display/focus.js"
+import { operation } from "../display/operations.js"
+import { visibleLines } from "../display/update_lines.js"
+import { clipPos, cmp, maxPos, minPos, Pos } from "../line/pos.js"
+import { getLine, lineAtHeight } from "../line/utils_line.js"
+import { posFromMouse } from "../measurement/position_measurement.js"
+import { eventInWidget } from "../measurement/widgets.js"
+import { normalizeSelection, Range, Selection } from "../model/selection.js"
+import { extendRange, extendSelection, replaceOneSelection, setSelection } from "../model/selection_updates.js"
+import { captureRightClick, chromeOS, ie, ie_version, mac, webkit, safari } from "../util/browser.js"
+import { getOrder, getBidiPartAt } from "../util/bidi.js"
+import { activeElt, root, win } from "../util/dom.js"
+import { e_button, e_defaultPrevented, e_preventDefault, e_target, hasHandler, off, on, signal, signalDOMEvent } from "../util/event.js"
+import { dragAndDrop } from "../util/feature_detection.js"
+import { bind, countColumn, findColumn, sel_mouse } from "../util/misc.js"
+import { addModifierNames } from "../input/keymap.js"
+import { Pass } from "../util/misc.js"
+import { dispatchKey } from "./key_events.js"
+import { commands } from "./commands.js"
+const DOUBLECLICK_DELAY = 400
+class PastClick {
+constructor(time, pos, button) {
+this.time = time
+this.pos = pos
+this.button = button
+}
+compare(time, pos, button) {
+return this.time + DOUBLECLICK_DELAY > time &&
+cmp(pos, this.pos) == 0 && button == this.button
+}
+}
+let lastClick, lastDoubleClick
+function clickRepeat(pos, button) {
+let now = +new Date
+if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) {
+lastClick = lastDoubleClick = null
+return "triple"
+} else if (lastClick && lastClick.compare(now, pos, button)) {
+lastDoubleClick = new PastClick(now, pos, button)
+lastClick = null
+return "double"
+} else {
+lastClick = new PastClick(now, pos, button)
+lastDoubleClick = null
+return "single"
+}
+}
+// A mouse down can be a single click, double click, triple click,
+// start of selection drag, start of text drag, new cursor
+// (ctrl-click), rectangle drag (alt-drag), or xwin
+// middle-click-paste. Or it might be a click on something we should
+// not interfere with, such as a scrollbar or widget.
+export function onMouseDown(e) {
+let cm = this, display = cm.display
+if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) return
+display.input.ensurePolled()
+display.shift = e.shiftKey
+if (eventInWidget(display, e)) {
+if (!webkit) {
+// Briefly turn off draggability, to allow widgets to do
+// normal dragging things.
+display.scroller.draggable = false
+setTimeout(() => display.scroller.draggable = true, 100)
+}
+return
+}
+if (clickInGutter(cm, e)) return
+let pos = posFromMouse(cm, e), button = e_button(e), repeat = pos ? clickRepeat(pos, button) : "single"
+win(cm).focus()
+// #3261: make sure, that we're not starting a second selection
+if (button == 1 && cm.state.selectingText)
+cm.state.selectingText(e)
+if (pos && handleMappedButton(cm, button, pos, repeat, e)) return
+if (button == 1) {
+if (pos) leftButtonDown(cm, pos, repeat, e)
+else if (e_target(e) == display.scroller) e_preventDefault(e)
+} else if (button == 2) {
+if (pos) extendSelection(cm.doc, pos)
+setTimeout(() => display.input.focus(), 20)
+} else if (button == 3) {
+if (captureRightClick) cm.display.input.onContextMenu(e)
+else delayBlurEvent(cm)
+}
+}
+function handleMappedButton(cm, button, pos, repeat, event) {
+let name = "Click"
+if (repeat == "double") name = "Double" + name
+else if (repeat == "triple") name = "Triple" + name
+name = (button == 1 ? "Left" : button == 2 ? "Middle" : "Right") + name
+return dispatchKey(cm,  addModifierNames(name, event), event, bound => {
+if (typeof bound == "string") bound = commands[bound]
+if (!bound) return false
+let done = false
+try {
+if (cm.isReadOnly()) cm.state.suppressEdits = true
+done = bound(cm, pos) != Pass
+} finally {
+cm.state.suppressEdits = false
+}
+return done
+})
+}
+function configureMouse(cm, repeat, event) {
+let option = cm.getOption("configureMouse")
+let value = option ? option(cm, repeat, event) : {}
+if (value.unit == null) {
+let rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey
+value.unit = rect ? "rectangle" : repeat == "single" ? "char" : repeat == "double" ? "word" : "line"
+}
+if (value.extend == null || cm.doc.extend) value.extend = cm.doc.extend || event.shiftKey
+if (value.addNew == null) value.addNew = mac ? event.metaKey : event.ctrlKey
+if (value.moveOnDrag == null) value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey)
+return value
+}
+function leftButtonDown(cm, pos, repeat, event) {
+if (ie) setTimeout(bind(ensureFocus, cm), 0)
+else cm.curOp.focus = activeElt(root(cm))
+let behavior = configureMouse(cm, repeat, event)
+let sel = cm.doc.sel, contained
+if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() &&
+repeat == "single" && (contained = sel.contains(pos)) > -1 &&
+(cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) &&
+(cmp(contained.to(), pos) > 0 || pos.xRel < 0))
+leftButtonStartDrag(cm, event, pos, behavior)
+else
+leftButtonSelect(cm, event, pos, behavior)
+}
+// Start a text drag. When it ends, see if any dragging actually
+// happen, and treat as a click if it didn't.
+function leftButtonStartDrag(cm, event, pos, behavior) {
+let display = cm.display, moved = false
+let dragEnd = operation(cm, e => {
+if (webkit) display.scroller.draggable = false
+cm.state.draggingText = false
+if (cm.state.delayingBlurEvent) {
+if (cm.hasFocus()) cm.state.delayingBlurEvent = false
+else delayBlurEvent(cm)
+}
+off(display.wrapper.ownerDocument, "mouseup", dragEnd)
+off(display.wrapper.ownerDocument, "mousemove", mouseMove)
+off(display.scroller, "dragstart", dragStart)
+off(display.scroller, "drop", dragEnd)
+if (!moved) {
+e_preventDefault(e)
+if (!behavior.addNew)
+extendSelection(cm.doc, pos, null, null, behavior.extend)
+// Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)
+if ((webkit && !safari) || ie && ie_version == 9)
+setTimeout(() => {display.wrapper.ownerDocument.body.focus({preventScroll: true}); display.input.focus()}, 20)
+else
+display.input.focus()
+}
+})
+let mouseMove = function(e2) {
+moved = moved || Math.abs(event.clientX - e2.clientX) + Math.abs(event.clientY - e2.clientY) >= 10
+}
+let dragStart = () => moved = true
+// Let the drag handler handle this.
+if (webkit) display.scroller.draggable = true
+cm.state.draggingText = dragEnd
+dragEnd.copy = !behavior.moveOnDrag
+on(display.wrapper.ownerDocument, "mouseup", dragEnd)
+on(display.wrapper.ownerDocument, "mousemove", mouseMove)
+on(display.scroller, "dragstart", dragStart)
+on(display.scroller, "drop", dragEnd)
+cm.state.delayingBlurEvent = true
+setTimeout(() => display.input.focus(), 20)
+// IE's approach to draggable
+if (display.scroller.dragDrop) display.scroller.dragDrop()
+}
+function rangeForUnit(cm, pos, unit) {
+if (unit == "char") return new Range(pos, pos)
+if (unit == "word") return cm.findWordAt(pos)
+if (unit == "line") return new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0)))
+let result = unit(cm, pos)
+return new Range(result.from, result.to)
+}
+// Normal selection, as opposed to text dragging.
+function leftButtonSelect(cm, event, start, behavior) {
+if (ie) delayBlurEvent(cm)
+let display = cm.display, doc = cm.doc
+e_preventDefault(event)
+let ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges
+if (behavior.addNew && !behavior.extend) {
+ourIndex = doc.sel.contains(start)
+if (ourIndex > -1)
+ourRange = ranges[ourIndex]
+else
+ourRange = new Range(start, start)
+} else {
+ourRange = doc.sel.primary()
+ourIndex = doc.sel.primIndex
+}
+if (behavior.unit == "rectangle") {
+if (!behavior.addNew) ourRange = new Range(start, start)
+start = posFromMouse(cm, event, true, true)
+ourIndex = -1
+} else {
+let range = rangeForUnit(cm, start, behavior.unit)
+if (behavior.extend)
+ourRange = extendRange(ourRange, range.anchor, range.head, behavior.extend)
+else
+ourRange = range
+}
+if (!behavior.addNew) {
+ourIndex = 0
+setSelection(doc, new Selection([ourRange], 0), sel_mouse)
+startSel = doc.sel
+} else if (ourIndex == -1) {
+ourIndex = ranges.length
+setSelection(doc, normalizeSelection(cm, ranges.concat([ourRange]), ourIndex),
+{scroll: false, origin: "*mouse"})
+} else if (ranges.length > 1 && ranges[ourIndex].empty() && behavior.unit == "char" && !behavior.extend) {
+setSelection(doc, normalizeSelection(cm, ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0),
+{scroll: false, origin: "*mouse"})
+startSel = doc.sel
+} else {
+replaceOneSelection(doc, ourIndex, ourRange, sel_mouse)
+}
+let lastPos = start
+function extendTo(pos) {
+if (cmp(lastPos, pos) == 0) return
+lastPos = pos
+if (behavior.unit == "rectangle") {
+let ranges = [], tabSize = cm.options.tabSize
+let startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize)
+let posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize)
+let left = Math.min(startCol, posCol), right = Math.max(startCol, posCol)
+for (let line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
+line <= end; line++) {
+let text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize)
+if (left == right)
+ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos)))
+else if (text.length > leftPos)
+ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize))))
+}
+if (!ranges.length) ranges.push(new Range(start, start))
+setSelection(doc, normalizeSelection(cm, startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),
+{origin: "*mouse", scroll: false})
+cm.scrollIntoView(pos)
+} else {
+let oldRange = ourRange
+let range = rangeForUnit(cm, pos, behavior.unit)
+let anchor = oldRange.anchor, head
+if (cmp(range.anchor, anchor) > 0) {
+head = range.head
+anchor = minPos(oldRange.from(), range.anchor)
+} else {
+head = range.anchor
+anchor = maxPos(oldRange.to(), range.head)
+}
+let ranges = startSel.ranges.slice(0)
+ranges[ourIndex] = bidiSimplify(cm, new Range(clipPos(doc, anchor), head))
+setSelection(doc, normalizeSelection(cm, ranges, ourIndex), sel_mouse)
+}
+}
+let editorSize = display.wrapper.getBoundingClientRect()
+// Used to ensure timeout re-tries don't fire when another extend
+// happened in the meantime (clearTimeout isn't reliable -- at
+// least on Chrome, the timeouts still happen even when cleared,
+// if the clear happens after their scheduled firing time).
+let counter = 0
+function extend(e) {
+let curCount = ++counter
+let cur = posFromMouse(cm, e, true, behavior.unit == "rectangle")
+if (!cur) return
+if (cmp(cur, lastPos) != 0) {
+cm.curOp.focus = activeElt(root(cm))
+extendTo(cur)
+let visible = visibleLines(display, doc)
+if (cur.line >= visible.to || cur.line < visible.from)
+setTimeout(operation(cm, () => {if (counter == curCount) extend(e)}), 150)
+} else {
+let outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0
+if (outside) setTimeout(operation(cm, () => {
+if (counter != curCount) return
+display.scroller.scrollTop += outside
+extend(e)
+}), 50)
+}
+}
+function done(e) {
+cm.state.selectingText = false
+counter = Infinity
+// If e is null or undefined we interpret this as someone trying
+// to explicitly cancel the selection rather than the user
+// letting go of the mouse button.
+if (e) {
+e_preventDefault(e)
+display.input.focus()
+}
+off(display.wrapper.ownerDocument, "mousemove", move)
+off(display.wrapper.ownerDocument, "mouseup", up)
+doc.history.lastSelOrigin = null
+}
+let move = operation(cm, e => {
+if (e.buttons === 0 || !e_button(e)) done(e)
+else extend(e)
+})
+let up = operation(cm, done)
+cm.state.selectingText = up
+on(display.wrapper.ownerDocument, "mousemove", move)
+on(display.wrapper.ownerDocument, "mouseup", up)
+}
+// Used when mouse-selecting to adjust the anchor to the proper side
+// of a bidi jump depending on the visual position of the head.
+function bidiSimplify(cm, range) {
+let {anchor, head} = range, anchorLine = getLine(cm.doc, anchor.line)
+if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) return range
+let order = getOrder(anchorLine)
+if (!order) return range
+let index = getBidiPartAt(order, anchor.ch, anchor.sticky), part = order[index]
+if (part.from != anchor.ch && part.to != anchor.ch) return range
+let boundary = index + ((part.from == anchor.ch) == (part.level != 1) ? 0 : 1)
+if (boundary == 0 || boundary == order.length) return range
+// Compute the relative visual position of the head compared to the
+// anchor (<0 is to the left, >0 to the right)
+let leftSide
+if (head.line != anchor.line) {
+leftSide = (head.line - anchor.line) * (cm.doc.direction == "ltr" ? 1 : -1) > 0
+} else {
+let headIndex = getBidiPartAt(order, head.ch, head.sticky)
+let dir = headIndex - index || (head.ch - anchor.ch) * (part.level == 1 ? -1 : 1)
+if (headIndex == boundary - 1 || headIndex == boundary)
+leftSide = dir < 0
+else
+leftSide = dir > 0
+}
+let usePart = order[boundary + (leftSide ? -1 : 0)]
+let from = leftSide == (usePart.level == 1)
+let ch = from ? usePart.from : usePart.to, sticky = from ? "after" : "before"
+return anchor.ch == ch && anchor.sticky == sticky ? range : new Range(new Pos(anchor.line, ch, sticky), head)
+}
+// Determines whether an event happened in the gutter, and fires the
+// handlers for the corresponding event.
+function gutterEvent(cm, e, type, prevent) {
+let mX, mY
+if (e.touches) {
+mX = e.touches[0].clientX
+mY = e.touches[0].clientY
+} else {
+try { mX = e.clientX; mY = e.clientY }
+catch(e) { return false }
+}
+if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false
+if (prevent) e_preventDefault(e)
+let display = cm.display
+let lineBox = display.lineDiv.getBoundingClientRect()
+if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e)
+mY -= lineBox.top - display.viewOffset
+for (let i = 0; i < cm.display.gutterSpecs.length; ++i) {
+let g = display.gutters.childNodes[i]
+if (g && g.getBoundingClientRect().right >= mX) {
+let line = lineAtHeight(cm.doc, mY)
+let gutter = cm.display.gutterSpecs[i]
+signal(cm, type, cm, line, gutter.className, e)
+return e_defaultPrevented(e)
+}
+}
+}
+export function clickInGutter(cm, e) {
+return gutterEvent(cm, e, "gutterClick", true)
+}
+// CONTEXT MENU HANDLING
+// To make the context menu work, we need to briefly unhide the
+// textarea (making it as unobtrusive as possible) to let the
+// right-click take effect on it.
+export function onContextMenu(cm, e) {
+if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) return
+if (signalDOMEvent(cm, e, "contextmenu")) return
+if (!captureRightClick) cm.display.input.onContextMenu(e)
+}
+function contextMenuInGutter(cm, e) {
+if (!hasHandler(cm, "gutterContextMenu")) return false
+return gutterEvent(cm, e, "gutterContextMenu", false)
+}