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test-selection.js
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test-selection.js
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const {doc, blockquote, p, em, img: img_, strong, code, br, hr, ul, li} = require("prosemirror-test-builder")
const ist = require("ist")
const {Selection, NodeSelection} = require("prosemirror-state")
const {tempEditor, findTextNode} = require("./view")
const {Decoration, DecorationSet} = require("..")
const img = img_({src: "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="})
function allPositions(doc) {
let found = []
function scan(node, start) {
if (node.isTextblock) {
for (let i = 0; i <= node.content.size; i++) found.push(start + i)
} else {
node.forEach((child, offset) => scan(child, start + offset + 1))
}
}
scan(doc, 0)
return found
}
function setDOMSel(node, offset) {
let range = document.createRange()
range.setEnd(node, offset)
range.setStart(node, offset)
let sel = window.getSelection()
sel.removeAllRanges()
sel.addRange(range)
}
function getSel() {
let sel = window.getSelection()
let node = sel.focusNode, offset = sel.focusOffset
while (node && node.nodeType != 3) {
let after = offset < node.childNodes.length && node.childNodes[offset]
let before = offset > 0 && node.childNodes[offset - 1]
if (after) { node = after; offset = 0 }
else if (before) { node = before; offset = node.nodeType == 3 ? node.nodeValue.length : node.childNodes.length }
else break
}
return {node: node, offset: offset}
}
function setSel(view, sel) {
if (typeof sel == "number") sel = Selection.near(view.state.doc.resolve(sel))
view.dispatch(view.state.tr.setSelection(sel))
}
function event(code) {
let event = document.createEvent("Event")
event.initEvent("keydown", true, true)
event.keyCode = code
return event
}
const LEFT = 37, RIGHT = 39, UP = 38, DOWN = 40
if (!document.hasFocus()) console["warn"]("Document doesn't have focus. Skipping some tests.")
describe("EditorView", () => {
it("can read the DOM selection", () => {
// disabled when the document doesn't have focus, since that causes this to fail
if (!document.hasFocus()) return
let view = tempEditor({doc: doc(p("one"), hr, blockquote(p("two")))})
function test(node, offset, expected) {
setDOMSel(node, offset)
view.dom.focus()
view.domObserver.flush()
let sel = view.state.selection
ist(sel.head == null ? sel.from : sel.head, expected)
}
let one = findTextNode(view.dom, "one")
let two = findTextNode(view.dom, "two")
test(one, 0, 1)
test(one, 1, 2)
test(one, 3, 4)
test(one.parentNode, 0, 1)
test(one.parentNode, 1, 4)
test(two, 0, 8)
test(two, 3, 11)
test(two.parentNode, 1, 11)
test(view.dom, 1, 4)
test(view.dom, 2, 8)
test(view.dom, 3, 11)
})
it("syncs the DOM selection with the editor selection", () => {
// disabled when the document doesn't have focus, since that causes this to fail
if (!document.hasFocus()) return
let view = tempEditor({doc: doc(p("one"), hr, blockquote(p("two")))})
function test(pos, node, offset) {
setSel(view, pos)
let sel = getSel()
ist(sel.node, node)
ist(sel.offset, offset)
}
let one = findTextNode(view.dom, "one")
let two = findTextNode(view.dom, "two")
view.focus()
test(1, one, 0)
test(2, one, 1)
test(4, one, 3)
test(8, two, 0)
test(10, two, 2)
})
it("returns sensible screen coordinates", () => {
let view = tempEditor({doc: doc(p("one"), p("two"))})
let p00 = view.coordsAtPos(1)
let p01 = view.coordsAtPos(2)
let p03 = view.coordsAtPos(4)
let p10 = view.coordsAtPos(6)
let p13 = view.coordsAtPos(9)
ist(p00.bottom, p00.top, ">")
ist(p13.bottom, p13.top, ">")
ist(p00.top, p01.top)
ist(p01.top, p03.top)
ist(p00.bottom, p03.bottom)
ist(p10.top, p13.top)
ist(p01.left, p00.left, ">")
ist(p03.left, p01.left, ">")
ist(p10.top, p00.top, ">")
ist(p13.left, p10.left, ">")
})
it("produces sensible screen coordinates in corner cases", () => {
let view = tempEditor({doc: doc(p("one", em("two", strong("three"), img), br, code("foo")), p())})
return new Promise(ok => {
setTimeout(() => {
allPositions(view.state.doc).forEach(pos => {
let coords = view.coordsAtPos(pos)
let found = view.posAtCoords({top: coords.top + 1, left: coords.left}).pos
ist(found, pos)
setSel(view, pos)
})
ok()
}, 20)
})
})
it("produces horizontal rectangles for positions between blocks", () => {
let view = tempEditor({doc: doc(p("ha"), hr, blockquote(p("ba")))})
let a = view.coordsAtPos(0)
ist(a.top, a.bottom)
ist(a.top, view.dom.firstChild.getBoundingClientRect().top)
ist(a.left, a.right, "<")
let b = view.coordsAtPos(4)
ist(b.top, b.bottom)
ist(b.top, a.top, ">")
ist(b.left, b.right, "<")
let c = view.coordsAtPos(5)
ist(c.top, c.bottom)
ist(c.top, b.top, ">")
let d = view.coordsAtPos(6)
ist(d.top, d.bottom)
ist(d.left, d.right, "<")
ist(d.top, view.dom.getBoundingClientRect().bottom, "<")
})
it("produces sensible screen coordinates around line breaks", () => {
let view = tempEditor({doc: doc(p("one two three four five-six-seven-eight"))})
view.dom.style.width = "4em"
allPositions(view.state.doc);[9].forEach(pos => {
let coords = view.coordsAtPos(pos)
let found = view.posAtCoords({top: coords.top + 1, left: coords.left}).pos
ist(found, pos)
})
})
it("can go back and forth between screen coords and document positions", () => {
let view = tempEditor({doc: doc(p("one"), blockquote(p("two"), p("three")))})
;[1, 2, 4, 7, 14, 15].forEach(pos => {
let coords = view.coordsAtPos(pos)
let found = view.posAtCoords({top: coords.top + 1, left: coords.left}).pos
ist(found, pos)
})
})
it("returns correct screen coordinates for wrapped lines", () => {
let view = tempEditor({})
let top = view.coordsAtPos(1), pos = 1, end
for (let i = 0; i < 100; i++) {
view.dispatch(view.state.tr.insertText("abc def ghi "))
pos += 12
end = view.coordsAtPos(pos)
if (end.bottom > top.bottom + 4) break
}
ist(view.posAtCoords({left: end.left + 50, top: end.top + 5}).pos, pos)
})
it("makes arrow motion go through selectable inline nodes", () => {
let view = tempEditor({doc: doc(p("foo<a>", img, "bar"))})
view.dispatchEvent(event(RIGHT))
ist(view.state.selection.from, 4)
view.dispatchEvent(event(RIGHT))
ist(view.state.selection.head, 5)
ist(view.state.selection.anchor, 5)
view.dispatchEvent(event(LEFT))
ist(view.state.selection.from, 4)
view.dispatchEvent(event(LEFT))
ist(view.state.selection.head, 4)
ist(view.state.selection.anchor, 4)
})
it("makes arrow motion go through selectable block nodes", () => {
let view = tempEditor({doc: doc(p("hello<a>"), hr, ul(li(p("there"))))})
view.dispatchEvent(event(DOWN))
ist(view.state.selection.from, 7)
setSel(view, 11)
view.dispatchEvent(event(UP))
ist(view.state.selection.from, 7)
})
it("supports arrow motion through adjacent blocks", () => {
let view = tempEditor({doc: doc(blockquote(p("hello<a>")), hr, hr, p("there"))})
view.dispatchEvent(event(DOWN))
ist(view.state.selection.from, 9)
view.dispatchEvent(event(DOWN))
ist(view.state.selection.from, 10)
setSel(view, 14)
view.dispatchEvent(event(UP))
ist(view.state.selection.from, 10)
view.dispatchEvent(event(UP))
ist(view.state.selection.from, 9)
})
it("support horizontal motion through blocks", () => {
let view = tempEditor({doc: doc(p("foo<a>"), hr, hr, p("bar"))})
view.dispatchEvent(event(RIGHT))
ist(view.state.selection.from, 5)
view.dispatchEvent(event(RIGHT))
ist(view.state.selection.from, 6)
view.dispatchEvent(event(RIGHT))
ist(view.state.selection.head, 8)
view.dispatchEvent(event(LEFT))
ist(view.state.selection.from, 6)
view.dispatchEvent(event(LEFT))
ist(view.state.selection.from, 5)
view.dispatchEvent(event(LEFT))
ist(view.state.selection.head, 4)
})
it("allows moving directly from an inline node to a block node", () => {
let view = tempEditor({doc: doc(p("foo", img), hr, p(img, "bar"))})
setSel(view, NodeSelection.create(view.state.doc, 4))
view.dispatchEvent(event(DOWN))
ist(view.state.selection.from, 6)
setSel(view, NodeSelection.create(view.state.doc, 8))
view.dispatchEvent(event(UP))
ist(view.state.selection.from, 6)
})
it("updates the selection even if the DOM parameters look unchanged", () => {
if (!document.hasFocus()) return
let view = tempEditor({doc: doc(p("foobar<a>"))})
view.focus()
let decos = DecorationSet.create(view.state.doc, [Decoration.inline(1, 4, {color: "green"})])
view.setProps({decorations() { return decos }})
view.setProps({decorations: null})
view.setProps({decorations() { return decos }})
let range = document.createRange()
range.setEnd(document.getSelection().anchorNode, document.getSelection().anchorOffset)
range.setStart(view.dom, 0)
ist(range.toString(), "foobar")
})
})