mirror of https://github.com/status-im/codimd.git
99 lines
3.2 KiB
JavaScript
99 lines
3.2 KiB
JavaScript
// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: http://codemirror.net/LICENSE
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(function(mod) {
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if (typeof exports == "object" && typeof module == "object") // CommonJS
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mod(require("../../lib/codemirror"));
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else if (typeof define == "function" && define.amd) // AMD
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define(["../../lib/codemirror"], mod);
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else // Plain browser env
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mod(CodeMirror);
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})(function(CodeMirror) {
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"use strict";
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CodeMirror.defineOption("selectionPointer", false, function(cm, val) {
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var data = cm.state.selectionPointer;
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if (data) {
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CodeMirror.off(cm.getWrapperElement(), "mousemove", data.mousemove);
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CodeMirror.off(cm.getWrapperElement(), "mouseout", data.mouseout);
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CodeMirror.off(window, "scroll", data.windowScroll);
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cm.off("cursorActivity", reset);
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cm.off("scroll", reset);
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cm.state.selectionPointer = null;
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cm.display.lineDiv.style.cursor = "";
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}
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if (val) {
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data = cm.state.selectionPointer = {
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value: typeof val == "string" ? val : "default",
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mousemove: function(event) { mousemove(cm, event); },
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mouseout: function(event) { mouseout(cm, event); },
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windowScroll: function() { reset(cm); },
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rects: null,
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mouseX: null, mouseY: null,
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willUpdate: false
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};
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CodeMirror.on(cm.getWrapperElement(), "mousemove", data.mousemove);
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CodeMirror.on(cm.getWrapperElement(), "mouseout", data.mouseout);
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CodeMirror.on(window, "scroll", data.windowScroll);
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cm.on("cursorActivity", reset);
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cm.on("scroll", reset);
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}
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});
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function mousemove(cm, event) {
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var data = cm.state.selectionPointer;
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if (event.buttons == null ? event.which : event.buttons) {
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data.mouseX = data.mouseY = null;
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} else {
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data.mouseX = event.clientX;
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data.mouseY = event.clientY;
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}
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scheduleUpdate(cm);
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}
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function mouseout(cm, event) {
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if (!cm.getWrapperElement().contains(event.relatedTarget)) {
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var data = cm.state.selectionPointer;
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data.mouseX = data.mouseY = null;
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scheduleUpdate(cm);
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}
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}
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function reset(cm) {
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cm.state.selectionPointer.rects = null;
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scheduleUpdate(cm);
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}
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function scheduleUpdate(cm) {
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if (!cm.state.selectionPointer.willUpdate) {
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cm.state.selectionPointer.willUpdate = true;
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setTimeout(function() {
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update(cm);
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cm.state.selectionPointer.willUpdate = false;
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}, 50);
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}
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}
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function update(cm) {
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var data = cm.state.selectionPointer;
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if (!data) return;
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if (data.rects == null && data.mouseX != null) {
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data.rects = [];
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if (cm.somethingSelected()) {
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for (var sel = cm.display.selectionDiv.firstChild; sel; sel = sel.nextSibling)
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data.rects.push(sel.getBoundingClientRect());
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}
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}
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var inside = false;
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if (data.mouseX != null) for (var i = 0; i < data.rects.length; i++) {
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var rect = data.rects[i];
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if (rect.left <= data.mouseX && rect.right >= data.mouseX &&
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rect.top <= data.mouseY && rect.bottom >= data.mouseY)
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inside = true;
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}
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var cursor = inside ? data.value : "";
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if (cm.display.lineDiv.style.cursor != cursor)
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cm.display.lineDiv.style.cursor = cursor;
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}
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});
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