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* [[Chart]] class provides base functionality for all chart types to inherit.\r\n */\r\n\r\n/**\r\n * ============================================================================\r\n * IMPORTS\r\n * ============================================================================\r\n * @hidden\r\n */\r\nimport { registry } from \"../core/Registry\";\r\nimport { Component, IComponentProperties, IComponentDataFields, IComponentEvents, IComponentAdapters } from \"../core/Component\";\r\nimport { MutableValueDisposer, Disposer } from \"../core/utils/Disposer\";\r\nimport { ListTemplate, IListEvents, ListDisposer } from \"../core/utils/List\";\r\nimport { Container } from \"../core/Container\";\r\nimport { Label } from \"../core/elements/Label\";\r\nimport { Grip } from \"../core/elements/Grip\";\r\nimport { Legend } from \"../charts/Legend\";\r\nimport { DataItem } from \"../core/DataItem\";\r\nimport { percent } from \"../core/utils/Percent\";\r\nimport * as $iter from \"../core/utils/Iterator\";\r\nimport * as $type from \"../core/utils/Type\";\r\nimport { defaultRules, ResponsiveBreakpoints } from \"../core/utils/Responsive\";\r\n\r\n/**\r\n * ============================================================================\r\n * DATA ITEM\r\n * ============================================================================\r\n * @hidden\r\n */\r\n\r\n/**\r\n * Defines a [[DataItem]] for [[Chart]].\r\n *\r\n * @see {@link DataItem}\r\n */\r\nexport class ChartDataItem extends DataItem {\r\n\r\n\t/**\r\n\t * Defines a type of [[Component]] this data item is used for.\r\n\t */\r\n\tpublic _component!: Chart;\r\n\r\n\t/**\r\n\t * Constructor\r\n\t */\r\n\tconstructor() {\r\n\t\tsuper();\r\n\t\tthis.className = \"ChartDataItem\";\r\n\t\tthis.applyTheme();\r\n\t}\r\n\r\n}\r\n\r\n\r\n/**\r\n * ============================================================================\r\n * REQUISITES\r\n * ============================================================================\r\n * @hidden\r\n */\r\n\r\n/**\r\n * Defines data fields for [[Chart]].\r\n */\r\nexport interface IChartDataFields extends IComponentDataFields { }\r\n\r\n/**\r\n * Defines properties for [[Chart]].\r\n */\r\nexport interface IChartProperties extends IComponentProperties { }\r\n\r\n/**\r\n * Defines events for [[Chart]].\r\n */\r\nexport interface IChartEvents extends IComponentEvents { }\r\n\r\n/**\r\n * Defines adapters for [[Chart]].\r\n *\r\n * @see {@link Adapter}\r\n */\r\nexport interface IChartAdapters extends IComponentAdapters, IChartProperties { }\r\n\r\n\r\n/**\r\n * ============================================================================\r\n * MAIN CLASS\r\n * ============================================================================\r\n * @hidden\r\n */\r\n\r\n/**\r\n * A base class for all Charts.\r\n *\r\n * @see {@link IChartEvents} for a list of available Events\r\n * @see {@link IChartAdapters} for a list of available Adapters\r\n */\r\nexport class Chart extends Component {\r\n\r\n\t/**\r\n\t * Available data fields.\r\n\t */\r\n\tpublic _dataFields: IChartDataFields;\r\n\r\n\t/**\r\n\t * Defines available properties.\r\n\t */\r\n\tpublic _properties!: IChartProperties;\r\n\r\n\t/**\r\n\t * Defines available adapters.\r\n\t */\r\n\tpublic _adapter!: IChartAdapters;\r\n\r\n\t/**\r\n\t * Defines available events.\r\n\t */\r\n\tpublic _events!: IChartEvents;\r\n\r\n\t/**\r\n\t * A List of chart titles.\r\n\t */\r\n\tpublic titles: ListTemplate<Label>;\r\n\r\n\t/**\r\n\t * Container that holds the chart itself.\r\n\t */\r\n\tpublic chartContainer: Container;\r\n\r\n\t/**\r\n\t * A reference to a container that holds both the chart and the legend.\r\n\t */\r\n\tpublic chartAndLegendContainer: Container;\r\n\r\n\t/**\r\n\t * A reference to chart's [[Legend]].\r\n\t * @ignore\r\n\t */\r\n\tprotected _legend = new MutableValueDisposer<Legend>();\r\n\r\n\t/**\r\n\t * Instance of the grip element.\r\n\t */\r\n\tprotected _dragGrip: $type.Optional<Grip>;\r\n\r\n\t/**\r\n\t * Constructor\r\n\t */\r\n\tconstructor() {\r\n\r\n\t\t// Init\r\n\t\tsuper();\r\n\r\n\t\tif (this.constructor === Chart) {\r\n\t\t\tthrow new Error(\"'Chart' cannot be instantiated directly. Please use a specific chart type.\");\r\n\t\t}\r\n\t\tthis.className = \"Chart\";\r\n\r\n\t\t// Create a list of titles\r\n\t\tconst template = new Label();\r\n\t\tthis.titles = new ListTemplate<Label>(template);\r\n\t\tthis._disposers.push(new ListDisposer(this.titles));\r\n\t\tthis._disposers.push(template);\r\n\r\n\t\t// Chart component is also a container. it holds _chartAndLegendCont and titles\r\n\t\tthis.width = percent(100);\r\n\t\tthis.height = percent(100);\r\n\t\tthis.layout = \"vertical\";\r\n\r\n\t\t// Chart and legend\r\n\t\tlet chartAndLegendContainer: Container = this.createChild(Container);\r\n\t\tchartAndLegendContainer.shouldClone = false;\r\n\t\tchartAndLegendContainer.layout = \"vertical\";\r\n\t\tchartAndLegendContainer.width = percent(100);\r\n\t\tchartAndLegendContainer.height = percent(100);\r\n\t\tthis.chartAndLegendContainer = chartAndLegendContainer;\r\n\r\n\t\t// Chart container holds all the elements of a chart, extept titles and legend\r\n\t\tlet chartContainer = chartAndLegendContainer.createChild(Container);\r\n\t\tchartContainer.shouldClone = false;\r\n\t\tchartContainer.width = percent(100);\r\n\t\tchartContainer.height = percent(100);\r\n\t\tthis.chartContainer = chartContainer;\r\n\r\n\t\tthis.showOnInit = true;\r\n\r\n\t\tthis._disposers.push(this._legend);\r\n\r\n\t\t// Add title list events to apply certain formatting options and to make\r\n\t\t// the chart reference them as accessible screen reader labels\r\n\t\tthis.titles.events.on(\"inserted\", (label) => {\r\n\t\t\tthis.processTitle(label);\r\n\t\t\tthis.updateReaderTitleReferences();\r\n\t\t}, this, false);\r\n\t\tthis.titles.events.on(\"removed\", (label) => {\r\n\t\t\tthis.updateReaderTitleReferences();\r\n\t\t}, this, false);\r\n\r\n\t\t// Accessibility\r\n\t\t// It seems we can't set focusable on the whole chart because it seems to\r\n\t\t// mess up the whole focus event system - getting a focus on an inside\r\n\t\t// object also trigger focus on parent\r\n\t\t//this.focusable = true;\r\n\t\tthis.role = \"region\";\r\n\r\n\t\tthis.defaultState.transitionDuration = 1;\r\n\r\n\t\t// Apply theme\r\n\t\tthis.applyTheme();\r\n\t}\r\n\r\n\t/**\r\n\t * Sets defaults that instantiate some objects that rely on parent, so they\r\n\t * cannot be set in constructor.\r\n\t */\r\n\tprotected applyInternalDefaults(): void {\r\n\t\tsuper.applyInternalDefaults();\r\n\t\tif (!$type.hasValue(this.readerTitle)) {\r\n\t\t\tthis.readerTitle = this.language.translate(\"Chart\");\r\n\t\t}\r\n\t}\r\n\r\n\t/**\r\n\t * Initiates drawing of the chart.\r\n\t *\r\n\t * @ignore Exclude from docs\r\n\t */\r\n\tpublic draw(): void {\r\n\t\tthis.fixLayout();\r\n\t\tsuper.draw();\r\n\t}\r\n\r\n\t/**\r\n\t * Updates legend's hierarchy based on the position.\r\n\t */\r\n\tprotected fixLayout(): void {\r\n\t\tlet legend = this.legend;\r\n\t\tif (legend) {\r\n\t\t\tlet chartAndLegendContainer = this.chartAndLegendContainer;\r\n\t\t\tlet chartContainer = this.chartContainer;\r\n\t\t\tchartContainer.x = undefined;\r\n\t\t\tchartContainer.y = undefined;\r\n\t\t\tif (legend.position != \"absolute\") {\r\n\t\t\t\tlegend.x = undefined;\r\n\t\t\t\tlegend.y = undefined;\r\n\t\t\t}\r\n\r\n\t\t\tswitch (legend.position) {\r\n\t\t\t\tcase \"left\":\r\n\t\t\t\t\tchartAndLegendContainer.layout = \"horizontal\";\r\n\t\t\t\t\tlegend.toBack();\r\n\t\t\t\t\tbreak;\r\n\r\n\t\t\t\tcase \"right\":\r\n\t\t\t\t\tchartAndLegendContainer.layout = \"horizontal\";\r\n\t\t\t\t\tlegend.toFront();\r\n\t\t\t\t\tbreak;\r\n\r\n\t\t\t\tcase \"top\":\r\n\t\t\t\t\tchartAndLegendContainer.layout = \"vertical\";\r\n\t\t\t\t\tlegend.toBack();\r\n\t\t\t\t\tbreak;\r\n\r\n\t\t\t\tcase \"bottom\":\r\n\t\t\t\t\tchartAndLegendContainer.layout = \"vertical\";\r\n\t\t\t\t\tlegend.toFront();\r\n\t\t\t\t\tbreak;\r\n\t\t\t\tcase \"absolute\":\r\n\t\t\t\t\tlegend.isMeasured = false;\r\n\t\t\t\t\tbreak;\r\n\t\t\t}\r\n\t\t}\r\n\t}\r\n\r\n\t/**\r\n\t * Setups the legend to use the chart's data.\r\n\t */\r\n\tprotected feedLegend(): void {\r\n\r\n\t\t// Nothing here. This method is provided only as a \"placeholder\" for\r\n\t\t// extending classes to override\r\n\r\n\t}\r\n\r\n\t/**\r\n\t * Adds a new title to the chart when it is inserted into chart's titles\r\n\t * list.\r\n\t * @param event An event object which is triggered when inserting into titles list\r\n\t * @return Label object\r\n\t */\r\n\tprotected processTitle(event: IListEvents<Label>[\"inserted\"]): Label {\r\n\t\tlet title: Label = event.newValue;\r\n\t\ttitle.parent = this;\r\n\t\ttitle.toBack();\r\n\t\ttitle.shouldClone = false;\r\n\t\ttitle.align = \"center\";\r\n\r\n\t\t// Need to explicitly apply the `id` attribute so it can be referenced by\r\n\t\t// `aria-labelledby`\r\n\t\ttitle.uidAttr();\r\n\t\treturn title;\r\n\t}\r\n\r\n\t/**\r\n\t * Checks if chart has any title elements. If it does, we will use them in an\r\n\t * `aria-labelledby` attribute so that screen readers can use them to properly\r\n\t * describe the chart when it is focused or hovered.\r\n\t *\r\n\t * @ignore Exclude from docs\r\n\t */\r\n\tpublic updateReaderTitleReferences(): void {\r\n\t\tif (this.titles.length) {\r\n\t\t\tlet titleIds: Array<string> = [];\r\n\t\t\t$iter.each(this.titles.iterator(), (title) => {\r\n\t\t\t\ttitleIds.push(title.uid);\r\n\t\t\t});\r\n\t\t\tthis.setSVGAttribute({ \"aria-labelledby\": titleIds.join(\" \") });\r\n\t\t}\r\n\t\telse {\r\n\t\t\tthis.removeSVGAttribute(\"aria-labelledby\");\r\n\t\t}\r\n\t}\r\n\r\n\r\n\t/**\r\n\t * Holds the instance of chart's [[Leged]].\r\n\t *\r\n\t * @see {@link https://www.amcharts.com/docs/v4/concepts/legend/} for more information about legends\r\n\t * @param Legend\r\n\t */\r\n\tpublic set legend(legend: Legend) {\r\n\t\tthis.setLegend(legend);\r\n\t}\r\n\r\n\t/**\r\n\t * @return Legend\r\n\t */\r\n\tpublic get legend(): Legend {\r\n\t\treturn this._legend.get();\r\n\t}\r\n\r\n\t/**\r\n\t * Prepares the legend instance for use in this chart.\r\n\t *\r\n\t * @param legend Legend\r\n\t */\r\n\tprotected setLegend(legend: Legend) {\r\n\t\tif (this._legend.get() !== legend) {\r\n\t\t\tif (legend) {\r\n\t\t\t\t// Set legend options\r\n\t\t\t\tlegend.parent = this.chartAndLegendContainer;\r\n\r\n\t\t\t\tthis._legend.set(legend, legend.events.on(\"propertychanged\", (event) => {\r\n\t\t\t\t\tif (event.property == \"position\") {\r\n\t\t\t\t\t\tthis.fixLayout();\r\n\t\t\t\t\t}\r\n\t\t\t\t}, undefined, false));\r\n\r\n\t\t\t\tlegend.addDisposer(new Disposer(() => {\r\n\t\t\t\t\tthis.legend = undefined;\r\n\t\t\t\t}))\r\n\r\n\t\t\t} else {\r\n\t\t\t\tthis._legend.reset();\r\n\t\t\t}\r\n\r\n\t\t\tthis.feedLegend();\r\n\t\t}\r\n\t}\r\n\r\n\r\n\t/**\r\n\t * Destroys this object and all related data.\r\n\t */\r\n\tpublic dispose() {\r\n\t\t// otherwise there might be some errors when disposing chart which was just inited\r\n\t\tif (this.legend) {\r\n\t\t\tthis.legend.dispose();\r\n\t\t}\r\n\t\tsuper.dispose();\r\n\t}\r\n\r\n\t/**\r\n\t * Processes JSON-based config before it is applied to the object.\r\n\t *\r\n\t * @ignore Exclude from docs\r\n\t * @param config Config\r\n\t */\r\n\tpublic processConfig(config?: { [index: string]: any }): void {\r\n\r\n\t\tif (config) {\r\n\r\n\t\t\t// Set up legend\r\n\t\t\tif ($type.hasValue(config.legend) && !$type.hasValue(config.legend.type)) {\r\n\t\t\t\tconfig.legend.type = \"Legend\";\r\n\t\t\t}\r\n\r\n\t\t}\r\n\r\n\t\tsuper.processConfig(config);\r\n\r\n\t}\r\n\r\n\t/**\r\n\t * Copies all properties from another instance of [[Series]].\r\n\t *\r\n\t * @param source Source series\r\n\t */\r\n\tpublic copyFrom(source: this) {\r\n\t\tthis.titles.copyFrom(source.titles);\r\n\t\tthis.chartContainer.copyFrom(source.chartContainer);\r\n\t\tif (source.legend) {\r\n\t\t\tthis.legend = source.legend.clone();\r\n\t\t\tthis.legend.removeChildren();\r\n\t\t}\r\n\t\tsuper.copyFrom(source);\r\n\t}\r\n\r\n\t/**\r\n\t * An instance of [[Grip]] which serves as a grip point which appears on\r\n\t * touch and allows scrolling whole page even if chart is occupying the\r\n\t * whole of the screen and would otherwise prevent scrolling.\r\n\t *\r\n\t * @since 4.4.0\r\n\t * @see {@link https://www.amcharts.com/docs/v4/concepts/touch/} For more information.\r\n\t * @param value Grip\r\n\t */\r\n\tpublic set dragGrip(value: Grip) {\r\n\t\tthis._dragGrip = value;\r\n\t}\r\n\r\n\t/**\r\n\t * @return Grip\r\n\t */\r\n\tpublic get dragGrip(): Grip {\r\n\t\tif (!this._dragGrip) {\r\n\t\t\tlet grip = this.tooltipContainer.createChild(Grip);\r\n\t\t\tgrip.align = \"right\";\r\n\t\t\tgrip.valign = \"middle\";\r\n\t\t\tgrip.hide(0);\r\n\r\n\t\t\tgrip.events.on(\"down\", (ev) => {\r\n\t\t\t\tif (ev.touch) {\r\n\t\t\t\t\tthis.interactionsEnabled = false;\r\n\t\t\t\t}\r\n\t\t\t});\r\n\r\n\t\t\tgrip.events.on(\"up\", (ev) => {\r\n\t\t\t\tthis.interactionsEnabled = true;\r\n\t\t\t});\r\n\r\n\t\t\tthis.events.on(\"down\", (ev) => {\r\n\t\t\t\tif (ev.touch) {\r\n\t\t\t\t\tgrip.show();\r\n\t\t\t\t}\r\n\t\t\t});\r\n\r\n\t\t\tthis._dragGrip = grip;\r\n\t\t}\r\n\t\treturn this._dragGrip;\r\n\t}\r\n\r\n\tpublic set focusable(value: boolean) {\r\n\t\tthis.parent.focusable = value;\r\n\t}\r\n\r\n\tpublic get focusable(): boolean {\r\n\t\treturn this.parent.focusable;\r\n\t}\r\n}\r\n\r\n/**\r\n * Register class in system, so that it can be instantiated using its name from\r\n * anywhere.\r\n *\r\n * @ignore\r\n */\r\nregistry.registeredClasses[\"Chart\"] = Chart;\r\n\r\n\r\n\r\n/**\r\n * Add default responsive rules\r\n */\r\n\r\n/**\r\n * Reduce horizontal margins\r\n */\r\ndefaultRules.push({\r\n\trelevant: ResponsiveBreakpoints.widthXS,\r\n\tstate: function(target, stateId) {\r\n\t\tif (target instanceof Chart) {\r\n\t\t\tlet state = target.states.create(stateId);\r\n\t\t\tif (target.pixelPaddingLeft > 10) {\r\n\t\t\t\tstate.properties.paddingLeft = 10;\r\n\t\t\t}\r\n\t\t\tif (target.pixelPaddingRight > 10) {\r\n\t\t\t\tstate.properties.paddingRight = 10;\r\n\t\t\t}\r\n\t\t\treturn state;\r\n\t\t}\r\n\r\n\t\treturn null;\r\n\t}\r\n});\r\n\r\n/**\r\n * Reduce vertical margins\r\n */\r\ndefaultRules.push({\r\n\trelevant: ResponsiveBreakpoints.heightXS,\r\n\tstate: function(target, stateId) {\r\n\t\tif (target instanceof Chart) {\r\n\t\t\tlet state = target.states.create(stateId);\r\n\t\t\tif (target.pixelPaddingTop > 10) {\r\n\t\t\t\tstate.properties.paddingTop = 10;\r\n\t\t\t}\r\n\t\t\tif (target.pixelPaddingBottom > 10) {\r\n\t\t\t\tstate.properties.paddingBottom = 10;\r\n\t\t\t}\r\n\t\t\treturn state;\r\n\t\t}\r\n\r\n\t\treturn null;\r\n\t}\r\n});\r\n\r\n/**\r\n * Remove horizontal padding\r\n */\r\ndefaultRules.push({\r\n\trelevant: ResponsiveBreakpoints.widthXXS,\r\n\tstate: function(target, stateId) {\r\n\t\tif (target instanceof Chart) {\r\n\t\t\tlet state = target.states.create(stateId);\r\n\t\t\tstate.properties.paddingLeft = 0;\r\n\t\t\tstate.properties.paddingRight = 0;\r\n\t\t\treturn state;\r\n\t\t}\r\n\r\n\t\treturn null;\r\n\t}\r\n});\r\n\r\n/**\r\n * Remove vertical padding\r\n */\r\ndefaultRules.push({\r\n\trelevant: ResponsiveBreakpoints.heightXXS,\r\n\tstate: function(target, stateId) {\r\n\t\tif (target instanceof Chart) {\r\n\t\t\tlet state = target.states.create(stateId);\r\n\t\t\tstate.properties.paddingTop = 0;\r\n\t\t\tstate.properties.paddingBottom = 0;\r\n\t\t\treturn state;\r\n\t\t}\r\n\r\n\t\treturn null;\r\n\t}\r\n});\r\n"]} |