/**
* @license Highcharts JS v6.0.4 (2017-12-15)
* Drag-panes module
*
* (c) 2010-2017 Highsoft AS
* Author: Kacper Madej
*
* License: www.highcharts.com/license
*/
'use strict';
(function(factory) {
if (typeof module === 'object' && module.exports) {
module.exports = factory;
} else {
factory(Highcharts);
}
}(function(Highcharts) {
(function(H) {
/**
* Plugin for resizing axes / panes in a chart.
*
* (c) 2010-2017 Highsoft AS
* Author: Kacper Madej
*
* License: www.highcharts.com/license
*/
var hasTouch = H.hasTouch,
merge = H.merge,
wrap = H.wrap,
each = H.each,
isNumber = H.isNumber,
addEvent = H.addEvent,
relativeLength = H.relativeLength,
objectEach = H.objectEach,
Axis = H.Axis,
Pointer = H.Pointer,
/**
* Default options for AxisResizer.
*/
resizerOptions = {
/**
* Minimal size of a resizable axis. Could be set as a percent
* of plot area or pixel size.
*
* This feature requires the `drag-panes.js` module.
*
* @product highstock
* @default 10%
*
* @type {Number|String}
* @sample {highstock} stock/yaxis/resize-min-max-length minLength and maxLength
* @apioption yAxis.minLength
*/
minLength: '10%',
/**
* Maximal size of a resizable axis. Could be set as a percent
* of plot area or pixel size.
*
* This feature requires the `drag-panes.js` module.
*
* @product highstock
* @default 100%
*
* @type {String|Number}
* @sample {highstock} stock/yaxis/resize-min-max-length minLength and maxLength
* @apioption yAxis.maxLength
*/
maxLength: '100%',
/**
* Options for axis resizing for Drag Panes module.
*
* This feature requires the `drag-panes.js` module.
*
* @product highstock
* @optionparent yAxis.resize
*/
resize: {
/**
* Contains two arrays of axes that are controlled by control line
* of the axis.
*
* This feature requires the `drag-panes.js` module.
*/
controlledAxis: {
/**
* Array of axes that should move out of the way of resizing
* being done for the current axis. If not set, the next axis
* will be used.
*
* This feature requires the `drag-panes.js` module.
*
* @type {Array.<String|Number>}
* @default []
* @sample {highstock} stock/yaxis/multiple-resizers Three panes with resizers
* @sample {highstock} stock/yaxis/resize-multiple-axes One resizer controlling multiple axes
*/
next: [],
/**
* Array of axes that should move with the current axis
* while resizing.
*
* This feature requires the `drag-panes.js` module.
*
* @type {Array.<String|Number>}
* @default []
* @sample {highstock} stock/yaxis/multiple-resizers Three panes with resizers
* @sample {highstock} stock/yaxis/resize-multiple-axes One resizer controlling multiple axes
*/
prev: []
},
/**
* Enable or disable resize by drag for the axis.
*
* This feature requires the `drag-panes.js` module.
*
* @sample {highstock} stock/demo/candlestick-and-volume Enabled resizer
*/
enabled: false,
/**
* Cursor style for the control line.
*
* In styled mode use class `highcharts-axis-resizer` instead.
*
* This feature requires the `drag-panes.js` module.
*/
cursor: 'ns-resize',
/**
* Color of the control line.
*
* In styled mode use class `highcharts-axis-resizer` instead.
*
* This feature requires the `drag-panes.js` module.
*
* @type {Color}
* @sample {highstock} stock/yaxis/styled-resizer Styled resizer
*/
lineColor: '#cccccc',
/**
* Dash style of the control line.
*
* In styled mode use class `highcharts-axis-resizer` instead.
*
* This feature requires the `drag-panes.js` module.
*
* @default Solid
* @sample {highstock} stock/yaxis/styled-resizer Styled resizer
* @see For supported options check
* [dashStyle](#plotOptions.series.dashStyle)
*/
lineDashStyle: 'Solid',
/**
* Width of the control line.
*
* In styled mode use class `highcharts-axis-resizer` instead.
*
* This feature requires the `drag-panes.js` module.
*
* @sample {highstock} stock/yaxis/styled-resizer Styled resizer
*/
lineWidth: 4,
/**
* Horizontal offset of the control line.
*
* This feature requires the `drag-panes.js` module.
*
* @sample {highstock} stock/yaxis/styled-resizer Styled resizer
*/
x: 0,
/**
* Vertical offset of the control line.
*
* This feature requires the `drag-panes.js` module.
*
* @sample {highstock} stock/yaxis/styled-resizer Styled resizer
*/
y: 0
}
};
merge(true, Axis.prototype.defaultYAxisOptions, resizerOptions);
/**
* The AxisResizer class.
* @param {Object} axis - main axis for the AxisResizer.
* @class
*/
H.AxisResizer = function(axis) {
this.init(axis);
};
H.AxisResizer.prototype = {
/**
* Initiate the AxisResizer object.
* @param {Object} axis - main axis for the AxisResizer.
*/
init: function(axis, update) {
this.axis = axis;
this.options = axis.options.resize;
this.render();
if (!update) {
// Add mouse events.
this.addMouseEvents();
}
},
/**
* Render the AxisResizer
*/
render: function() {
var resizer = this,
axis = resizer.axis,
chart = axis.chart,
options = resizer.options,
x = options.x,
y = options.y,
// Normalize control line position according to the plot area
pos = Math.min(
Math.max(
axis.top + axis.height + y,
chart.plotTop
),
chart.plotTop + chart.plotHeight
),
attr = {},
lineWidth;
attr = {
cursor: options.cursor,
stroke: options.lineColor,
'stroke-width': options.lineWidth,
dashstyle: options.lineDashStyle
};
// Register current position for future reference.
resizer.lastPos = pos - y;
if (!resizer.controlLine) {
resizer.controlLine = chart.renderer.path()
.addClass('highcharts-axis-resizer');
}
// Add to axisGroup after axis update, because the group is recreated
resizer.controlLine.add(axis.axisGroup);
lineWidth = options.lineWidth;
attr.d = chart.renderer.crispLine(
[
'M', axis.left + x, pos,
'L', axis.left + axis.width + x, pos
],
lineWidth
);
resizer.controlLine.attr(attr);
},
/**
* Set up the mouse and touch events for the control line.
*/
addMouseEvents: function() {
var resizer = this,
ctrlLineElem = resizer.controlLine.element,
container = resizer.axis.chart.container,
eventsToUnbind = [],
mouseMoveHandler,
mouseUpHandler,
mouseDownHandler;
/**
* Create mouse events' handlers.
* Make them as separate functions to enable wrapping them:
*/
resizer.mouseMoveHandler = mouseMoveHandler = function(e) {
resizer.onMouseMove(e);
};
resizer.mouseUpHandler = mouseUpHandler = function(e) {
resizer.onMouseUp(e);
};
resizer.mouseDownHandler = mouseDownHandler = function(e) {
resizer.onMouseDown(e);
};
/**
* Add mouse move and mouseup events. These are bind to doc/container,
* because resizer.grabbed flag is stored in mousedown events.
*/
eventsToUnbind.push(
addEvent(container, 'mousemove', mouseMoveHandler),
addEvent(container.ownerDocument, 'mouseup', mouseUpHandler),
addEvent(ctrlLineElem, 'mousedown', mouseDownHandler)
);
// Touch events.
if (hasTouch) {
eventsToUnbind.push(
addEvent(container, 'touchmove', mouseMoveHandler),
addEvent(container.ownerDocument, 'touchend', mouseUpHandler),
addEvent(ctrlLineElem, 'touchstart', mouseDownHandler)
);
}
resizer.eventsToUnbind = eventsToUnbind;
},
/**
* Mouse move event based on x/y mouse position.
* @param {Object} e - mouse event.
*/
onMouseMove: function(e) {
/*
* In iOS, a mousemove event with e.pageX === 0 is fired when holding
* the finger down in the center of the scrollbar. This should
* be ignored. Borrowed from Navigator.
*/
if (!e.touches || e.touches[0].pageX !== 0) {
// Drag the control line
if (this.grabbed) {
this.hasDragged = true;
this.updateAxes(this.axis.chart.pointer.normalize(e).chartY -
this.options.y);
}
}
},
/**
* Mouse up event based on x/y mouse position.
* @param {Object} e - mouse event.
*/
onMouseUp: function(e) {
if (this.hasDragged) {
this.updateAxes(this.axis.chart.pointer.normalize(e).chartY -
this.options.y);
}
// Restore runPointActions.
this.grabbed = this.hasDragged = this.axis.chart.activeResizer = null;
},
/**
* Mousedown on a control line.
* Will store necessary information for drag&drop.
*/
onMouseDown: function() {
// Clear all hover effects.
this.axis.chart.pointer.reset(false, 0);
// Disable runPointActions.
this.grabbed = this.axis.chart.activeResizer = true;
},
/**
* Update all connected axes after a change of control line position
*/
updateAxes: function(chartY) {
var resizer = this,
chart = resizer.axis.chart,
axes = resizer.options.controlledAxis,
nextAxes = axes.next.length === 0 ? [H.inArray(resizer.axis, chart.yAxis) + 1] : axes.next,
// Main axis is included in the prev array by default
prevAxes = [resizer.axis].concat(axes.prev),
axesConfigs = [], // prev and next configs
stopDrag = false,
plotTop = chart.plotTop,
plotHeight = chart.plotHeight,
plotBottom = plotTop + plotHeight,
yDelta,
normalize = function(val, min, max) {
return Math.round(Math.min(Math.max(val, min), max));
};
// Normalize chartY to plot area limits
chartY = Math.max(Math.min(chartY, plotBottom), plotTop);
yDelta = chartY - resizer.lastPos;
// Update on changes of at least 1 pixel in the desired direction
if (yDelta * yDelta < 1) {
return;
}
// First gather info how axes should behave
each([prevAxes, nextAxes], function(axesGroup, isNext) {
each(axesGroup, function(axisInfo, i) {
// Axes given as array index, axis object or axis id
var axis = isNumber(axisInfo) ?
// If it's a number - it's an index
chart.yAxis[axisInfo] :
(
// If it's first elem. in first group
(!isNext && !i) ?
// then it's an Axis object
axisInfo :
// else it should be an id
chart.get(axisInfo)
),
axisOptions = axis && axis.options,
optionsToUpdate = {},
hDelta = 0,
height, top,
minLength, maxLength;
// Skip if axis is not found
if (!axisOptions) {
return;
}
top = axis.top;
minLength = Math.round(
relativeLength(
axisOptions.minLength,
plotHeight
)
);
maxLength = Math.round(
relativeLength(
axisOptions.maxLength,
plotHeight
)
);
if (isNext) {
// Try to change height first. yDelta could had changed
yDelta = chartY - resizer.lastPos;
// Normalize height to option limits
height = normalize(axis.len - yDelta, minLength, maxLength);
// Adjust top, so the axis looks like shrinked from top
top = axis.top + yDelta;
// Check for plot area limits
if (top + height > plotBottom) {
hDelta = plotBottom - height - top;
chartY += hDelta;
top += hDelta;
}
// Fit to plot - when overflowing on top
if (top < plotTop) {
top = plotTop;
if (top + height > plotBottom) {
height = plotHeight;
}
}
// If next axis meets min length, stop dragging:
if (height === minLength) {
stopDrag = true;
}
axesConfigs.push({
axis: axis,
options: {
top: Math.round(top),
height: height
}
});
} else {
// Normalize height to option limits
height = normalize(chartY - top, minLength, maxLength);
// If prev axis meets max length, stop dragging:
if (height === maxLength) {
stopDrag = true;
}
// Check axis size limits
chartY = top + height;
axesConfigs.push({
axis: axis,
options: {
height: height
}
});
}
optionsToUpdate.height = height;
});
});
// If we hit the min/maxLength with dragging, don't do anything:
if (!stopDrag) {
// Now update axes:
each(axesConfigs, function(config) {
config.axis.update(config.options, false);
});
chart.redraw(false);
}
},
/**
* Destroy AxisResizer. Clear outside references, clear events,
* destroy elements, nullify properties.
*/
destroy: function() {
var resizer = this,
axis = resizer.axis;
// Clear resizer in axis
delete axis.resizer;
// Clear control line events
if (this.eventsToUnbind) {
each(this.eventsToUnbind, function(unbind) {
unbind();
});
}
// Destroy AxisResizer elements
resizer.controlLine.destroy();
// Nullify properties
objectEach(resizer, function(val, key) {
resizer[key] = null;
});
}
};
// Keep resizer reference on axis update
Axis.prototype.keepProps.push('resizer');
// Add new AxisResizer, update or remove it
wrap(Axis.prototype, 'render', function(proceed) {
proceed.apply(this, Array.prototype.slice.call(arguments, 1));
var axis = this,
resizer = axis.resizer,
resizerOptions = axis.options.resize,
enabled;
if (resizerOptions) {
enabled = resizerOptions.enabled !== false;
if (resizer) {
// Resizer present and enabled
if (enabled) {
// Update options
resizer.init(axis, true);
// Resizer present, but disabled
} else {
// Destroy the resizer
resizer.destroy();
}
} else {
// Resizer not present and enabled
if (enabled) {
// Add new resizer
axis.resizer = new H.AxisResizer(axis);
}
// Resizer not present and disabled, so do nothing
}
}
});
// Clear resizer on axis remove.
wrap(Axis.prototype, 'destroy', function(proceed, keepEvents) {
if (!keepEvents && this.resizer) {
this.resizer.destroy();
}
proceed.apply(this, Array.prototype.slice.call(arguments, 1));
});
// Prevent any hover effects while dragging a control line of AxisResizer.
wrap(Pointer.prototype, 'runPointActions', function(proceed) {
if (!this.chart.activeResizer) {
proceed.apply(this, Array.prototype.slice.call(arguments, 1));
}
});
}(Highcharts));
}));