Ext.data.JsonP.Ext_chart_Label({"alternateClassNames":[],"aliases":{},"enum":null,"parentMixins":[],"tagname":"class","subclasses":[],"extends":"Ext.Base","uses":[],"html":"

Hierarchy

Ext.Base
Ext.chart.Label

Requires

Mixed into

Files

Labels is a mixin to the Series class. Labels methods are implemented\nin each of the Series (Pie, Bar, etc) for label creation and placement.

\n\n

The 2 methods that must be implemented by the Series are:

\n\n\n\n\n

The application can override these methods to control the style and\nlocation of the labels. For instance, to display the labels in green and\nadd a '+' symbol when the value of a Line series exceeds 50:

\n\n
 Ext.define('Ext.chart.series.MyLine', {\n     extend: 'Ext.chart.series.Line',\n     alias: ['series.myline', 'Ext.chart.series.MyLine'],\n     type: 'MYLINE',\n\n     onPlaceLabel: function(label, storeItem, item, i, display, animate){\n         if (storeItem.data.y >= 50) {\n             label.setAttributes({\n                 fill: '#080',\n                 text: \"+\" + storeItem.data.y\n             }, true);\n         }\n         return this.callParent(arguments);\n     }\n });\n
\n\n

Note that for simple effects, like the example above, it is simpler\nfor the application to provide a label.renderer function in the config:

\n\n
  label: {\n      renderer: function(value, label, storeItem, item, i, display, animate, index) {\n          if (value >= 50) {\n              label.setAttributes({fill:'#080'});\n              value = \"+\" + value;\n          }\n          return value;\n      }\n  }\n
\n\n

The rule of thumb is that to customize the value and modify simple visual attributes, it\nis simpler to use a renderer function, while overridding onCreateLabel and onPlaceLabel\nallows the application to take entire control over the labels.

\n
Defined By

Config options

Ext.chart.Label
view source
: Object
Object with the following properties: ...

Object with the following properties:

\n
  • display : String

    Specifies the presence and position of the labels. The possible values depend on the chart type.\nFor Line and Scatter charts: \"under\" | \"over\" | \"rotate\".\nFor Bar and Column charts: \"insideStart\" | \"insideEnd\" | \"outside\".\nFor Pie charts: \"outside\" | \"rotate\".\nFor all charts: \"none\" hides the labels and \"middle\" is reserved for future use.\nOn stacked Bar and stacked Column charts, if 'stackedDisplay' is set, the values\n\"over\" or \"under\" can be passed internally to onCreateLabel and onPlaceLabel\n(however they cannot be used by the application as config values for label.display).

    \n\n

    Default value: 'none'.

    \n
  • stackedDisplay : String

    The type of label we want to display as a summary on a stacked\nbar or a stacked column. If set to 'total', the total amount\nof all the stacked values is displayed on top of the column.\nIf set to 'balances', the total amount of the positive values\nis displayed on top of the column and the total amount of the\nnegative values is displayed at the bottom.

    \n\n

    Default value: 'none'.

    \n
  • color : String

    The color of the label text.

    \n\n

    Default value: '#000' (black).

    \n
  • contrast : Boolean

    True to render the label in contrasting color with the backround of a column\nin a Bar chart or of a slice in a Pie chart. The label color should be specified\nin hex values (eg. '#f00' or '#ff0000'), not as a CSS color name (eg. 'red').

    \n\n

    Default value: false.

    \n
  • field : String|String[]

    The name(s) of the field(s) to be displayed in the labels. If your chart has 3 series\nthat correspond to the fields 'a', 'b', and 'c' of your model and you only want to\ndisplay labels for the series 'c', you must still provide an array [null, null, 'c'].

    \n\n

    Default value: 'name'.

    \n
  • minMargin : Number

    Specifies the minimum distance from a label to the origin of\nthe visualization. This parameter is useful when using\nPieSeries width variable pie slice lengths.

    \n\n

    Default value: 50.

    \n
  • font : String

    The font used for the labels.

    \n\n

    Default value: \"11px Helvetica, sans-serif\".

    \n
  • orientation : String

    Either \"horizontal\" or \"vertical\".

    \n\n

    Default value: \"horizontal\".

    \n
  • renderer : Function

    Optional function for formatting the label into a displayable value.

    \n\n

    The arguments to the method are:

    \n\n
      \n
    • value The value
    • \n
    • label, storeItem, item, i, display, animate, index

      \n\n

      Same arguments as onPlaceLabel.

      \n\n

      Default value: function(v) { return v; }

    • \n
    \n\n

Properties

Defined By

Instance Properties

...
\n

Defaults to: 'Ext.Base'

Ext.chart.Label
view source
: RegExpprivate
a regex to parse url type colors. ...

a regex to parse url type colors.

\n

Defaults to: /url\\s*\\(\\s*#([^\\/)]+)\\s*\\)/

...
\n

Defaults to: {}

...
\n

Defaults to: []

...
\n

Defaults to: {}

...
\n

Defaults to: true

Get the reference to the current class from which this object was instantiated. ...

Get the reference to the current class from which this object was instantiated. Unlike statics,\nthis.self is scope-dependent and it's meant to be used for dynamic inheritance. See statics\nfor a detailed comparison

\n\n
Ext.define('My.Cat', {\n    statics: {\n        speciesName: 'Cat' // My.Cat.speciesName = 'Cat'\n    },\n\n    constructor: function() {\n        alert(this.self.speciesName); // dependent on 'this'\n    },\n\n    clone: function() {\n        return new this.self();\n    }\n});\n\n\nExt.define('My.SnowLeopard', {\n    extend: 'My.Cat',\n    statics: {\n        speciesName: 'Snow Leopard'         // My.SnowLeopard.speciesName = 'Snow Leopard'\n    }\n});\n\nvar cat = new My.Cat();                     // alerts 'Cat'\nvar snowLeopard = new My.SnowLeopard();     // alerts 'Snow Leopard'\n\nvar clone = snowLeopard.clone();\nalert(Ext.getClassName(clone));             // alerts 'My.SnowLeopard'\n
\n
Defined By

Static Properties

...
\n

Defaults to: []

Methods

Defined By

Instance Methods

Ext.chart.Label
view source
new( config ) : Ext.chart.Labelprivate
the mixin constructor. ...

the mixin constructor. Used internally by Series.

\n

Parameters

Returns

Overrides: Ext.chart.Highlight.constructor

( args ) : Objectdeprecatedprotected
Call the original method that was previously overridden with override\n\nExt.define('My.Cat', {\n constructor: functi...

Call the original method that was previously overridden with override

\n\n
Ext.define('My.Cat', {\n    constructor: function() {\n        alert(\"I'm a cat!\");\n    }\n});\n\nMy.Cat.override({\n    constructor: function() {\n        alert(\"I'm going to be a cat!\");\n\n        this.callOverridden();\n\n        alert(\"Meeeeoooowwww\");\n    }\n});\n\nvar kitty = new My.Cat(); // alerts \"I'm going to be a cat!\"\n                          // alerts \"I'm a cat!\"\n                          // alerts \"Meeeeoooowwww\"\n
\n
\n

This method has been deprecated

\n

as of 4.1. Use callParent instead.

\n\n
\n

Parameters

  • args : Array/Arguments

    The arguments, either an array or the arguments object\nfrom the current method, for example: this.callOverridden(arguments)

    \n

Returns

  • Object

    Returns the result of calling the overridden method

    \n
Call the \"parent\" method of the current method. ...

Call the \"parent\" method of the current method. That is the method previously\noverridden by derivation or by an override (see Ext.define).

\n\n
 Ext.define('My.Base', {\n     constructor: function (x) {\n         this.x = x;\n     },\n\n     statics: {\n         method: function (x) {\n             return x;\n         }\n     }\n });\n\n Ext.define('My.Derived', {\n     extend: 'My.Base',\n\n     constructor: function () {\n         this.callParent([21]);\n     }\n });\n\n var obj = new My.Derived();\n\n alert(obj.x);  // alerts 21\n
\n\n

This can be used with an override as follows:

\n\n
 Ext.define('My.DerivedOverride', {\n     override: 'My.Derived',\n\n     constructor: function (x) {\n         this.callParent([x*2]); // calls original My.Derived constructor\n     }\n });\n\n var obj = new My.Derived();\n\n alert(obj.x);  // now alerts 42\n
\n\n

This also works with static methods.

\n\n
 Ext.define('My.Derived2', {\n     extend: 'My.Base',\n\n     statics: {\n         method: function (x) {\n             return this.callParent([x*2]); // calls My.Base.method\n         }\n     }\n });\n\n alert(My.Base.method(10);     // alerts 10\n alert(My.Derived2.method(10); // alerts 20\n
\n\n

Lastly, it also works with overridden static methods.

\n\n
 Ext.define('My.Derived2Override', {\n     override: 'My.Derived2',\n\n     statics: {\n         method: function (x) {\n             return this.callParent([x*2]); // calls My.Derived2.method\n         }\n     }\n });\n\n alert(My.Derived2.method(10); // now alerts 40\n
\n\n

To override a method and replace it and also call the superclass method, use\ncallSuper. This is often done to patch a method to fix a bug.

\n

Parameters

  • args : Array/Arguments

    The arguments, either an array or the arguments object\nfrom the current method, for example: this.callParent(arguments)

    \n

Returns

  • Object

    Returns the result of calling the parent method

    \n
This method is used by an override to call the superclass method but bypass any\noverridden method. ...

This method is used by an override to call the superclass method but bypass any\noverridden method. This is often done to \"patch\" a method that contains a bug\nbut for whatever reason cannot be fixed directly.

\n\n

Consider:

\n\n
 Ext.define('Ext.some.Class', {\n     method: function () {\n         console.log('Good');\n     }\n });\n\n Ext.define('Ext.some.DerivedClass', {\n     method: function () {\n         console.log('Bad');\n\n         // ... logic but with a bug ...\n\n         this.callParent();\n     }\n });\n
\n\n

To patch the bug in DerivedClass.method, the typical solution is to create an\noverride:

\n\n
 Ext.define('App.paches.DerivedClass', {\n     override: 'Ext.some.DerivedClass',\n\n     method: function () {\n         console.log('Fixed');\n\n         // ... logic but with bug fixed ...\n\n         this.callSuper();\n     }\n });\n
\n\n

The patch method cannot use callParent to call the superclass method since\nthat would call the overridden method containing the bug. In other words, the\nabove patch would only produce \"Fixed\" then \"Good\" in the console log, whereas,\nusing callParent would produce \"Fixed\" then \"Bad\" then \"Good\".

\n

Parameters

  • args : Array/Arguments

    The arguments, either an array or the arguments object\nfrom the current method, for example: this.callSuper(arguments)

    \n

Returns

  • Object

    Returns the result of calling the superclass method

    \n
...
\n

Parameters

Returns the initial configuration passed to constructor when instantiating\nthis class. ...

Returns the initial configuration passed to constructor when instantiating\nthis class.

\n

Parameters

  • name : String (optional)

    Name of the config option to return.

    \n

Returns

  • Object/Mixed

    The full config object or a single config value\nwhen name parameter specified.

    \n
...
\n

Parameters

Ext.chart.Label
view source
( hides )private
...
\n

Parameters

( config ) : Ext.Basechainableprotected
Initialize configuration for this class. ...

Initialize configuration for this class. a typical example:

\n\n
Ext.define('My.awesome.Class', {\n    // The default config\n    config: {\n        name: 'Awesome',\n        isAwesome: true\n    },\n\n    constructor: function(config) {\n        this.initConfig(config);\n    }\n});\n\nvar awesome = new My.awesome.Class({\n    name: 'Super Awesome'\n});\n\nalert(awesome.getName()); // 'Super Awesome'\n
\n

Parameters

Returns

( names, callback, scope )private
...
\n

Parameters

Ext.chart.Label
view source
( storeItem, item, i, display ) : Ext.draw.Spritetemplate
Called each time a new label is created. ...

Called each time a new label is created.

\n\n

Note: This method must be implemented in Series that mixes\nin this Label mixin.

\n
\n

This is a template method.\n a hook into the functionality of this class.\n Feel free to override it in child classes.

\n
\n

Parameters

  • storeItem : Ext.data.Model

    The element of the store that is\nrelated to the sprite.

    \n
  • item : Object

    The item related to the sprite.\nAn item is an object containing the position of the shape\nused to describe the visualization and also pointing to the\nactual shape (circle, rectangle, path, etc).

    \n
  • i : Number

    The index of the element created\n(i.e the first created label, second created label, etc).

    \n
  • display : String

    The label.display type.\nMay be false if the label is hidden

    \n

Returns

Ext.chart.Label
view source
( label, storeItem, item, i, display, animate, index )template
Called for updating the position of the label. ...

Called for updating the position of the label.

\n\n

Note: This method must be implemented in Series that mixes\nin this Label mixin.

\n
\n

This is a template method.\n a hook into the functionality of this class.\n Feel free to override it in child classes.

\n
\n

Parameters

  • label : Ext.draw.Sprite

    The sprite that draws the label.

    \n
  • storeItem : Ext.data.Model

    The element of the store\nthat is related to the sprite.

    \n
  • item : Object

    The item related to the\nsprite. An item is an object containing the position of\nthe shape used to describe the visualization and also\npointing to the actual shape (circle, rectangle, path, etc).

    \n
  • i : Number

    The index of the element to be updated\n(i.e. whether it is the first, second, third from the\nlabelGroup)

    \n
  • display : String

    The label.display type.\nMay be false if the label is hidden

    \n
  • animate : Boolean

    A boolean value to set or unset\nanimations for the labels.

    \n
  • index : Number

    The series index.

    \n
Ext.chart.Label
view source
( )private
a method to render all labels in the labelGroup ...

a method to render all labels in the labelGroup

\n
( config, applyIfNotSet ) : Ext.Basechainableprivate
...
\n

Parameters

Returns

Get the reference to the class from which this object was instantiated. ...

Get the reference to the class from which this object was instantiated. Note that unlike self,\nthis.statics() is scope-independent and it always returns the class from which it was called, regardless of what\nthis points to during run-time

\n\n
Ext.define('My.Cat', {\n    statics: {\n        totalCreated: 0,\n        speciesName: 'Cat' // My.Cat.speciesName = 'Cat'\n    },\n\n    constructor: function() {\n        var statics = this.statics();\n\n        alert(statics.speciesName);     // always equals to 'Cat' no matter what 'this' refers to\n                                        // equivalent to: My.Cat.speciesName\n\n        alert(this.self.speciesName);   // dependent on 'this'\n\n        statics.totalCreated++;\n    },\n\n    clone: function() {\n        var cloned = new this.self;                      // dependent on 'this'\n\n        cloned.groupName = this.statics().speciesName;   // equivalent to: My.Cat.speciesName\n\n        return cloned;\n    }\n});\n\n\nExt.define('My.SnowLeopard', {\n    extend: 'My.Cat',\n\n    statics: {\n        speciesName: 'Snow Leopard'     // My.SnowLeopard.speciesName = 'Snow Leopard'\n    },\n\n    constructor: function() {\n        this.callParent();\n    }\n});\n\nvar cat = new My.Cat();                 // alerts 'Cat', then alerts 'Cat'\n\nvar snowLeopard = new My.SnowLeopard(); // alerts 'Cat', then alerts 'Snow Leopard'\n\nvar clone = snowLeopard.clone();\nalert(Ext.getClassName(clone));         // alerts 'My.SnowLeopard'\nalert(clone.groupName);                 // alerts 'Cat'\n\nalert(My.Cat.totalCreated);             // alerts 3\n
\n

Returns

Defined By

Static Methods

( config )privatestatic
...
\n

Parameters

( members )chainableprivatestatic
...
\n

Parameters

( name, member )chainableprivatestatic
...
\n

Parameters

( members )chainablestatic
Add methods / properties to the prototype of this class. ...

Add methods / properties to the prototype of this class.

\n\n
Ext.define('My.awesome.Cat', {\n    constructor: function() {\n        ...\n    }\n});\n\n My.awesome.Cat.addMembers({\n     meow: function() {\n        alert('Meowww...');\n     }\n });\n\n var kitty = new My.awesome.Cat;\n kitty.meow();\n
\n

Parameters

( members ) : Ext.Basechainablestatic
Add / override static properties of this class. ...

Add / override static properties of this class.

\n\n
Ext.define('My.cool.Class', {\n    ...\n});\n\nMy.cool.Class.addStatics({\n    someProperty: 'someValue',      // My.cool.Class.someProperty = 'someValue'\n    method1: function() { ... },    // My.cool.Class.method1 = function() { ... };\n    method2: function() { ... }     // My.cool.Class.method2 = function() { ... };\n});\n
\n

Parameters

Returns

( xtype )chainableprivatestatic
...
\n

Parameters

( fromClass, members ) : Ext.Basechainableprivatestatic
Borrow another class' members to the prototype of this class. ...

Borrow another class' members to the prototype of this class.

\n\n
Ext.define('Bank', {\n    money: '$$$',\n    printMoney: function() {\n        alert('$$$$$$$');\n    }\n});\n\nExt.define('Thief', {\n    ...\n});\n\nThief.borrow(Bank, ['money', 'printMoney']);\n\nvar steve = new Thief();\n\nalert(steve.money); // alerts '$$$'\nsteve.printMoney(); // alerts '$$$$$$$'\n
\n

Parameters

  • fromClass : Ext.Base

    The class to borrow members from

    \n
  • members : Array/String

    The names of the members to borrow

    \n

Returns

Create a new instance of this Class. ...

Create a new instance of this Class.

\n\n
Ext.define('My.cool.Class', {\n    ...\n});\n\nMy.cool.Class.create({\n    someConfig: true\n});\n
\n\n

All parameters are passed to the constructor of the class.

\n

Returns

( alias, origin )static
Create aliases for existing prototype methods. ...

Create aliases for existing prototype methods. Example:

\n\n
Ext.define('My.cool.Class', {\n    method1: function() { ... },\n    method2: function() { ... }\n});\n\nvar test = new My.cool.Class();\n\nMy.cool.Class.createAlias({\n    method3: 'method1',\n    method4: 'method2'\n});\n\ntest.method3(); // test.method1()\n\nMy.cool.Class.createAlias('method5', 'method3');\n\ntest.method5(); // test.method3() -> test.method1()\n
\n

Parameters

( config )privatestatic
...
\n

Parameters

Get the current class' name in string format. ...

Get the current class' name in string format.

\n\n
Ext.define('My.cool.Class', {\n    constructor: function() {\n        alert(this.self.getName()); // alerts 'My.cool.Class'\n    }\n});\n\nMy.cool.Class.getName(); // 'My.cool.Class'\n
\n

Returns

( )deprecatedstatic
Adds members to class. ...

Adds members to class.

\n
\n

This method has been deprecated since 4.1

\n

Use addMembers instead.

\n\n
\n
( name, mixinClass )privatestatic
Used internally by the mixins pre-processor ...

Used internally by the mixins pre-processor

\n

Parameters

( fn, scope )chainableprivatestatic
...
\n

Parameters

( members ) : Ext.Basechainabledeprecatedstatic
Override members of this class. ...

Override members of this class. Overridden methods can be invoked via\ncallParent.

\n\n
Ext.define('My.Cat', {\n    constructor: function() {\n        alert(\"I'm a cat!\");\n    }\n});\n\nMy.Cat.override({\n    constructor: function() {\n        alert(\"I'm going to be a cat!\");\n\n        this.callParent(arguments);\n\n        alert(\"Meeeeoooowwww\");\n    }\n});\n\nvar kitty = new My.Cat(); // alerts \"I'm going to be a cat!\"\n                          // alerts \"I'm a cat!\"\n                          // alerts \"Meeeeoooowwww\"\n
\n\n

As of 4.1, direct use of this method is deprecated. Use Ext.define\ninstead:

\n\n
Ext.define('My.CatOverride', {\n    override: 'My.Cat',\n    constructor: function() {\n        alert(\"I'm going to be a cat!\");\n\n        this.callParent(arguments);\n\n        alert(\"Meeeeoooowwww\");\n    }\n});\n
\n\n

The above accomplishes the same result but can be managed by the Ext.Loader\nwhich can properly order the override and its target class and the build process\ncan determine whether the override is needed based on the required state of the\ntarget class (My.Cat).

\n
\n

This method has been deprecated since 4.1.0

\n

Use Ext.define instead

\n\n
\n

Parameters

  • members : Object

    The properties to add to this class. This should be\nspecified as an object literal containing one or more properties.

    \n

Returns

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