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