openrat-cms

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selection-pointer.js (3292B)

      1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
      2 // Distributed under an MIT license: http://codemirror.net/LICENSE
      3 
      4 (function(mod) {
      5   if (typeof exports == "object" && typeof module == "object") // CommonJS
      6     mod(require("../../lib/codemirror"));
      7   else if (typeof define == "function" && define.amd) // AMD
      8     define(["../../lib/codemirror"], mod);
      9   else // Plain browser env
     10     mod(CodeMirror);
     11 })(function(CodeMirror) {
     12   "use strict";
     13 
     14   CodeMirror.defineOption("selectionPointer", false, function(cm, val) {
     15     var data = cm.state.selectionPointer;
     16     if (data) {
     17       CodeMirror.off(cm.getWrapperElement(), "mousemove", data.mousemove);
     18       CodeMirror.off(cm.getWrapperElement(), "mouseout", data.mouseout);
     19       CodeMirror.off(window, "scroll", data.windowScroll);
     20       cm.off("cursorActivity", reset);
     21       cm.off("scroll", reset);
     22       cm.state.selectionPointer = null;
     23       cm.display.lineDiv.style.cursor = "";
     24     }
     25     if (val) {
     26       data = cm.state.selectionPointer = {
     27         value: typeof val == "string" ? val : "default",
     28         mousemove: function(event) { mousemove(cm, event); },
     29         mouseout: function(event) { mouseout(cm, event); },
     30         windowScroll: function() { reset(cm); },
     31         rects: null,
     32         mouseX: null, mouseY: null,
     33         willUpdate: false
     34       };
     35       CodeMirror.on(cm.getWrapperElement(), "mousemove", data.mousemove);
     36       CodeMirror.on(cm.getWrapperElement(), "mouseout", data.mouseout);
     37       CodeMirror.on(window, "scroll", data.windowScroll);
     38       cm.on("cursorActivity", reset);
     39       cm.on("scroll", reset);
     40     }
     41   });
     42 
     43   function mousemove(cm, event) {
     44     var data = cm.state.selectionPointer;
     45     if (event.buttons == null ? event.which : event.buttons) {
     46       data.mouseX = data.mouseY = null;
     47     } else {
     48       data.mouseX = event.clientX;
     49       data.mouseY = event.clientY;
     50     }
     51     scheduleUpdate(cm);
     52   }
     53 
     54   function mouseout(cm, event) {
     55     if (!cm.getWrapperElement().contains(event.relatedTarget)) {
     56       var data = cm.state.selectionPointer;
     57       data.mouseX = data.mouseY = null;
     58       scheduleUpdate(cm);
     59     }
     60   }
     61 
     62   function reset(cm) {
     63     cm.state.selectionPointer.rects = null;
     64     scheduleUpdate(cm);
     65   }
     66 
     67   function scheduleUpdate(cm) {
     68     if (!cm.state.selectionPointer.willUpdate) {
     69       cm.state.selectionPointer.willUpdate = true;
     70       setTimeout(function() {
     71         update(cm);
     72         cm.state.selectionPointer.willUpdate = false;
     73       }, 50);
     74     }
     75   }
     76 
     77   function update(cm) {
     78     var data = cm.state.selectionPointer;
     79     if (!data) return;
     80     if (data.rects == null && data.mouseX != null) {
     81       data.rects = [];
     82       if (cm.somethingSelected()) {
     83         for (var sel = cm.display.selectionDiv.firstChild; sel; sel = sel.nextSibling)
     84           data.rects.push(sel.getBoundingClientRect());
     85       }
     86     }
     87     var inside = false;
     88     if (data.mouseX != null) for (var i = 0; i < data.rects.length; i++) {
     89       var rect = data.rects[i];
     90       if (rect.left <= data.mouseX && rect.right >= data.mouseX &&
     91           rect.top <= data.mouseY && rect.bottom >= data.mouseY)
     92         inside = true;
     93     }
     94     var cursor = inside ? data.value : "";
     95     if (cm.display.lineDiv.style.cursor != cursor)
     96       cm.display.lineDiv.style.cursor = cursor;
     97   }
     98 });