GPQAPP

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// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: https://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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