X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=extras%2Fsynchronizer.js;fp=extras%2Fsynchronizer.js;h=0000000000000000000000000000000000000000;hb=3123ca57f71d145bb5bcc4a2f754d3dff3225346;hp=16e4d96bc36926a8a0a502bc7d20c294c705a3a5;hpb=26ee953643ccd2d32e38e6b60b20e6a01c1dc9ba;p=dygraphs.git

diff --git a/extras/synchronizer.js b/extras/synchronizer.js
deleted file mode 100644
index 16e4d96..0000000
--- a/extras/synchronizer.js
+++ /dev/null
@@ -1,206 +0,0 @@
-/**
- * Synchronize zooming and/or selections between a set of dygraphs.
- *
- * Usage:
- *
- *   var g1 = new Dygraph(...),
- *       g2 = new Dygraph(...),
- *       ...;
- *   var sync = Dygraph.synchronize(g1, g2, ...);
- *   // charts are now synchronized
- *   sync.detach();
- *   // charts are no longer synchronized
- *
- * You can set options using the last parameter, for example:
- *
- *   var sync = Dygraph.synchronize(g1, g2, g3, {
- *      selection: true,
- *      zoom: true
- *   });
- *
- * The default is to synchronize both of these.
- *
- * Instead of passing one Dygraph object as each parameter, you may also pass an
- * array of dygraphs:
- *
- *   var sync = Dygraph.synchronize([g1, g2, g3], {
- *      selection: false,
- *      zoom: true
- *   });
- *
- * You may also set `range: false` if you wish to only sync the x-axis.
- * The `range` option has no effect unless `zoom` is true (the default).
- */
-(function() {
-/* global Dygraph:false */
-'use strict';
-
-Dygraph.synchronize = function(/* dygraphs..., opts */) {
-  if (arguments.length === 0) {
-    throw 'Invalid invocation of Dygraph.synchronize(). Need >= 1 argument.';
-  }
-
-  var OPTIONS = ['selection', 'zoom', 'range'];
-  var opts = {
-    selection: true,
-    zoom: true,
-    range: true
-  };
-  var dygraphs = [];
-
-  var prevCallbacks = {
-    draw: null,
-    highlight: null,
-    unhighlight: null
-  };
-
-  var parseOpts = function(obj) {
-    if (!(obj instanceof Object)) {
-      throw 'Last argument must be either Dygraph or Object.';
-    } else {
-      for (var i = 0; i < OPTIONS.length; i++) {
-        var optName = OPTIONS[i];
-        if (obj.hasOwnProperty(optName)) opts[optName] = obj[optName];
-      }
-    }
-  };
-
-  if (arguments[0] instanceof Dygraph) {
-    // Arguments are Dygraph objects.
-    for (var i = 0; i < arguments.length; i++) {
-      if (arguments[i] instanceof Dygraph) {
-        dygraphs.push(arguments[i]);
-      } else {
-        break;
-      }
-    }
-    if (i < arguments.length - 1) {
-      throw 'Invalid invocation of Dygraph.synchronize(). ' +
-            'All but the last argument must be Dygraph objects.';
-    } else if (i == arguments.length - 1) {
-      parseOpts(arguments[arguments.length - 1]);
-    }
-  } else if (arguments[0].length) {
-    // Invoked w/ list of dygraphs, options
-    for (var i = 0; i < arguments[0].length; i++) {
-      dygraphs.push(arguments[0][i]);
-    }
-    if (arguments.length == 2) {
-      parseOpts(arguments[1]);
-    } else if (arguments.length > 2) {
-      throw 'Invalid invocation of Dygraph.synchronize(). ' +
-            'Expected two arguments: array and optional options argument.';
-    }  // otherwise arguments.length == 1, which is fine.
-  } else {
-    throw 'Invalid invocation of Dygraph.synchronize(). ' +
-          'First parameter must be either Dygraph or list of Dygraphs.';
-  }
-
-  if (dygraphs.length < 2) {
-    throw 'Invalid invocation of Dygraph.synchronize(). ' +
-          'Need two or more dygraphs to synchronize.';
-  }
-  
-  var readycount = dygraphs.length;
-  for (var i = 0; i < dygraphs.length; i++) {
-    var g = dygraphs[i];
-    g.ready( function() {
-      if (--readycount == 0) {
-        // Listen for draw, highlight, unhighlight callbacks.
-        if (opts.zoom) {
-          attachZoomHandlers(dygraphs, opts, prevCallbacks);
-        }
-
-        if (opts.selection) {
-          attachSelectionHandlers(dygraphs, prevCallbacks);
-        }
-      }
-    });
-  }
- 
-  return {
-    detach: function() {
-      for (var i = 0; i < dygraphs.length; i++) {
-        var g = dygraphs[i];
-        if (opts.zoom) {
-          g.updateOptions({drawCallback: prevCallbacks.draw});
-        }
-        if (opts.selection) {
-          g.updateOptions({
-            highlightCallback: prevCallbacks.highlight,
-            unhighlightCallback: prevCallbacks.unhighlight
-          });
-        }
-      }
-      // release references & make subsequent calls throw.
-      dygraphs = null;
-      opts = null;
-      prevCallbacks = null;
-    }
-  };
-};
-
-function attachZoomHandlers(gs, syncOpts, prevCallbacks) {
-  var block = false;
-  for (var i = 0; i < gs.length; i++) {
-    var g = gs[i];
-    prevCallbacks.draw = g.getFunctionOption('drawCallback');
-    g.updateOptions({
-      drawCallback: function(me, initial) {
-        if (prevCallbacks.draw) prevCallbacks.draw(me, initial);
-        if (block || initial) return;
-        block = true;
-        var opts = {
-          dateWindow: me.xAxisRange()
-        };
-        if (syncOpts.range) opts.valueRange = me.yAxisRange();
-
-        for (var j = 0; j < gs.length; j++) {
-          if (gs[j] == me) continue;
-          gs[j].updateOptions(opts);
-        }
-        block = false;
-      }
-    }, false /* no need to redraw */);
-  }
-}
-
-function attachSelectionHandlers(gs, prevCallbacks) {
-  var block = false;
-  for (var i = 0; i < gs.length; i++) {
-    var g = gs[i];
-    prevCallbacks.highlight = g.getFunctionOption('highlightCallback');
-    prevCallbacks.unhighlight = g.getFunctionOption('unhighlightCallback');
-    g.updateOptions({
-      highlightCallback: function(event, x, points, row, seriesName) {
-        if (prevCallbacks.highlight) {
-            prevCallbacks.highlight(event, x, points, row, seriesName);
-        }
-        if (block) return;
-        block = true;
-        var me = this;
-        for (var i = 0; i < gs.length; i++) {
-          if (me == gs[i]) continue;
-          var idx = gs[i].getRowForX(x);
-          if (idx !== null) {
-            gs[i].setSelection(idx, seriesName);
-          }
-        }
-        block = false;
-      },
-      unhighlightCallback: function(event) {
-        if (prevCallbacks.unhighlight) prevCallbacks.unhighlight(event);
-        if (block) return;
-        block = true;
-        var me = this;
-        for (var i = 0; i < gs.length; i++) {
-          if (me == gs[i]) continue;
-          gs[i].clearSelection();
-        }
-        block = false;
-      }
-    });
-  }
-}
-
-})();