# All files / src/components WorkflowChart.vue

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     <template>
        <div class="workflow-chart">
            <state
                v-for="state in layoutStates"
                :id="state.id"
                :ref="state.id"
                :key="state.id"
                :label="state.label"
                :center="state.center"
                :stylingClass="state.stylingClass"
                @click="$emit('state-click', $event)" />
            <chart-transition
                v-for="transition in layoutTransitions"
                :id="transition.id"
                :ref="transition.id"
                :key="transition.id"
                :transitionPath="transition.path"
                :transitionPathRadius="transitionPathRadius"
                :label="transition.label"
                :stylingClass="transition.stylingClass"
                @click="$emit('transition-click', $event)" />
        </div>
    </template>

    <script>
    import Transition from './Transition.vue';
    import State from './State.vue';
    import Layout from '../lib/layout';
    import { size } from '../lib/DivElement';

    export default {
        name: 'WorkflowChart',
        components: {
            State,
            chartTransition: Transition,
        },
        props: {
            transitions: {
                type: Array,
                required: true,
            },
            states: {
                type: Array,
                required: true,
            },
            stateSemantics: {
                type: Array,
                default: () => [],
            },
            transitionPathRadius: {
                type: Number,
                required: false,
                default: 12,
            },
        },
        data() {
            const layout = new Layout();

            this.setup(layout);

            return {
                layout,
                ...this.propsOf(layout),
            };
        },
        watch: {
            transitions() {
                this.setup(this.layout);
                this.updateComputedLayout();
            },
            states() {
                this.setup(this.layout);
                this.updateComputedLayout();
            },
        },
        mounted() {
            return this.emitSize();
        },
        methods: {
            emitSize() {
                this.$emit('size-change', this.layout.size);
            },
            propsOf(layout) {
                return {
                    layoutTransitions: layout.transitions,
                    layoutStates: layout.states,
                };
            },
            updateComputedLayout() {
                for (const [key, value] of Object.entries(this.propsOf(this.layout))) {
                    this[key] = value;
                }
                this.emitSize();
            },
            includeSizeWithClasses(classes) {
                return item => ({ ...item, ...size.ofDivWith(item, classes) });
            },
            addStateStylingClass(state) {
                for(const semantic of this.stateSemantics){
                    if(semantic.id === state.id){
                        return { ...state, stylingClass:semantic.classname };
                    }
                }
                return state;
            },
            addTransitionStylingClass(transition){
                for(const semantic of this.stateSemantics){
                    if(semantic.id === transition.target){
                        return { ...transition, stylingClass:semantic.classname };
                    }
                }
                return transition;
            },
            setup(layout) {
                const states = this.states
                    .map(this.includeSizeWithClasses('vue-workflow-chart-state')).map(this.addStateStylingClass);
                layout.setStates(states);
                const transitions = this.transitions.
                    map(this.includeSizeWithClasses('vue-workflow-chart-transition-label')).map(this.addTransitionStylingClass);
                layout.setTransitions(transitions);
            },
        },
    };
    </script>
    <style lang='scss'>
    @import '../styling.scss';
    </style>
    <style lang='scss' scoped>
    div {
        position: absolute;
    }
    </style>