import { defineVxeComponent } from '../../ui/src/comp';
import XEUtils from 'xe-utils';
import { getConfig, getIcon, getI18n, globalEvents, renderer, createEvent, globalMixins, GLOBAL_EVENT_KEYS, renderEmptyElement } from '../../ui';
import { getEventTargetNode, getAbsolutePos } from '../../ui/src/dom';
import { getLastZIndex, nextZIndex, getFuncText } from '../../ui/src/utils';
import { getSlotVNs } from '../../ui/src/vn';
export default {
    name: 'VxeIconPicker',
    mixins: [
        globalMixins.sizeMixin
    ],
    model: {
        prop: 'value',
        event: 'modelValue'
    },
    props: {
        value: String,
        placeholder: String,
        clearable: Boolean,
        size: {
            type: String,
            default: () => getConfig().iconPicker.size || getConfig().size
        },
        className: [String, Function],
        popupClassName: [String, Function],
        showIconTitle: {
            type: Boolean,
            default: () => getConfig().iconPicker.showIconTitle
        },
        readonly: {
            type: Boolean,
            default: null
        },
        disabled: {
            type: Boolean,
            default: null
        },
        icons: Array,
        placement: String,
        transfer: {
            type: Boolean,
            default: null
        }
    },
    inject: {
        $xeModal: {
            default: null
        },
        $xeDrawer: {
            default: null
        },
        $xeTable: {
            default: null
        },
        $xeForm: {
            default: null
        },
        formItemInfo: {
            from: 'xeFormItemInfo',
            default: null
        }
    },
    provide() {
        const $xeIconPicker = this;
        return {
            $xeIconPicker
        };
    },
    data() {
        const reactData = {
            initialized: false,
            selectIcon: '',
            panelIndex: 0,
            panelStyle: {},
            panelPlacement: null,
            visiblePanel: false,
            isAniVisible: false,
            isActivated: false
        };
        const internalData = {
            hpTimeout: undefined
        };
        return {
            xID: XEUtils.uniqueId(),
            reactData,
            internalData
        };
    },
    computed: Object.assign(Object.assign({}, {}), { computeFormReadonly() {
            const $xeIconPicker = this;
            const props = $xeIconPicker;
            const $xeForm = $xeIconPicker.$xeForm;
            const { readonly } = props;
            if (readonly === null) {
                if ($xeForm) {
                    return $xeForm.readonly;
                }
                return false;
            }
            return readonly;
        },
        computeIsDisabled() {
            const $xeIconPicker = this;
            const props = $xeIconPicker;
            const $xeForm = $xeIconPicker.$xeForm;
            const { disabled } = props;
            if (disabled === null) {
                if ($xeForm) {
                    return $xeForm.disabled;
                }
                return false;
            }
            return disabled;
        },
        computeBtnTransfer() {
            const $xeIconPicker = this;
            const props = $xeIconPicker;
            const $xeTable = $xeIconPicker.$xeTable;
            const $xeModal = $xeIconPicker.$xeModal;
            const $xeDrawer = $xeIconPicker.$xeDrawer;
            const $xeForm = $xeIconPicker.$xeForm;
            const { transfer } = props;
            if (transfer === null) {
                const globalTransfer = getConfig().iconPicker.transfer;
                if (XEUtils.isBoolean(globalTransfer)) {
                    return globalTransfer;
                }
                if ($xeTable || $xeModal || $xeDrawer || $xeForm) {
                    return true;
                }
            }
            return transfer;
        },
        computeInpPlaceholder() {
            const $xeIconPicker = this;
            const props = $xeIconPicker;
            const { placeholder } = props;
            if (placeholder) {
                return getFuncText(placeholder);
            }
            const globalPlaceholder = getConfig().select.placeholder;
            if (globalPlaceholder) {
                return getFuncText(globalPlaceholder);
            }
            return getI18n('vxe.base.pleaseSelect');
        },
        computeIconList() {
            const $xeIconPicker = this;
            const props = $xeIconPicker;
            let { icons } = props;
            if (!icons || !icons.length) {
                icons = getConfig().iconPicker.icons || [];
            }
            return icons.map(item => {
                if (XEUtils.isString(item)) {
                    return {
                        title: item,
                        icon: `vxe-icon-${`${item || ''}`.replace(/^vxe-icon-/, '')}`
                    };
                }
                return {
                    title: `${item.title || ''}`,
                    icon: item.icon || '',
                    iconRender: item.iconRender
                };
            });
        },
        computeIconGroupList() {
            const $xeIconPicker = this;
            const iconList = $xeIconPicker.computeIconList;
            return XEUtils.chunk(iconList, 4);
        },
        computeSelectIconItem() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            const { selectIcon } = reactData;
            const iconList = $xeIconPicker.computeIconList;
            return selectIcon ? iconList.find(item => item.icon === selectIcon) : null;
        } }),
    methods: {
        //
        // Method
        //
        dispatchEvent(type, params, evnt) {
            const $xeIconPicker = this;
            $xeIconPicker.$emit(type, createEvent(evnt, { $iconPicker: $xeIconPicker }, params));
        },
        emitModel(value) {
            const $xeIconPicker = this;
            const { _events } = $xeIconPicker;
            if (_events && _events.modelValue) {
                $xeIconPicker.$emit('modelValue', value);
            }
            else {
                $xeIconPicker.$emit('model-value', value);
            }
        },
        isPanelVisible() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            return reactData.visiblePanel;
        },
        togglePanel() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            if (reactData.visiblePanel) {
                $xeIconPicker.hideOptionPanel();
            }
            else {
                $xeIconPicker.showOptionPanel();
            }
            return $xeIconPicker.$nextTick();
        },
        hidePanel() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            if (reactData.visiblePanel) {
                $xeIconPicker.hideOptionPanel();
            }
            return $xeIconPicker.$nextTick();
        },
        showPanel() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            if (!reactData.visiblePanel) {
                $xeIconPicker.showOptionPanel();
            }
            return $xeIconPicker.$nextTick();
        },
        focus() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            const $input = $xeIconPicker.$refs.refInput;
            reactData.isActivated = true;
            $input.blur();
            return $xeIconPicker.$nextTick();
        },
        blur() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            const $input = $xeIconPicker.$refs.refInput;
            $input.blur();
            reactData.isActivated = false;
            return $xeIconPicker.$nextTick();
        },
        updateZindex() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            if (reactData.panelIndex < getLastZIndex()) {
                reactData.panelIndex = nextZIndex();
            }
        },
        updatePlacement() {
            const $xeIconPicker = this;
            const props = $xeIconPicker;
            const reactData = $xeIconPicker.reactData;
            return $xeIconPicker.$nextTick().then(() => {
                const { placement } = props;
                const { panelIndex } = reactData;
                const el = $xeIconPicker.$refs.refElem;
                const panelElem = $xeIconPicker.$refs.refOptionPanel;
                const btnTransfer = $xeIconPicker.computeBtnTransfer;
                if (panelElem && el) {
                    const targetHeight = el.offsetHeight;
                    const targetWidth = el.offsetWidth;
                    const panelHeight = panelElem.offsetHeight;
                    const panelWidth = panelElem.offsetWidth;
                    const marginSize = 5;
                    const panelStyle = {
                        zIndex: panelIndex
                    };
                    const { boundingTop, boundingLeft, visibleHeight, visibleWidth } = getAbsolutePos(el);
                    let panelPlacement = 'bottom';
                    if (btnTransfer) {
                        let left = boundingLeft;
                        let top = boundingTop + targetHeight;
                        if (placement === 'top') {
                            panelPlacement = 'top';
                            top = boundingTop - panelHeight;
                        }
                        else if (!placement) {
                            // 如果下面不够放，则向上
                            if (top + panelHeight + marginSize > visibleHeight) {
                                panelPlacement = 'top';
                                top = boundingTop - panelHeight;
                            }
                            // 如果上面不够放，则向下（优先）
                            if (top < marginSize) {
                                panelPlacement = 'bottom';
                                top = boundingTop + targetHeight;
                            }
                        }
                        // 如果溢出右边
                        if (left + panelWidth + marginSize > visibleWidth) {
                            left -= left + panelWidth + marginSize - visibleWidth;
                        }
                        // 如果溢出左边
                        if (left < marginSize) {
                            left = marginSize;
                        }
                        Object.assign(panelStyle, {
                            left: `${left}px`,
                            top: `${top}px`,
                            minWidth: `${targetWidth}px`
                        });
                    }
                    else {
                        if (placement === 'top') {
                            panelPlacement = 'top';
                            panelStyle.bottom = `${targetHeight}px`;
                        }
                        else if (!placement) {
                            // 如果下面不够放，则向上
                            if (boundingTop + targetHeight + panelHeight > visibleHeight) {
                                // 如果上面不够放，则向下（优先）
                                if (boundingTop - targetHeight - panelHeight > marginSize) {
                                    panelPlacement = 'top';
                                    panelStyle.bottom = `${targetHeight}px`;
                                }
                            }
                        }
                    }
                    reactData.panelStyle = panelStyle;
                    reactData.panelPlacement = panelPlacement;
                    return $xeIconPicker.$nextTick();
                }
            });
        },
        showOptionPanel() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            const internalData = $xeIconPicker.internalData;
            const { hpTimeout } = internalData;
            const isDisabled = $xeIconPicker.computeIsDisabled;
            if (!isDisabled) {
                if (hpTimeout) {
                    clearTimeout(hpTimeout);
                    internalData.hpTimeout = undefined;
                }
                const btnTransfer = $xeIconPicker.computeBtnTransfer;
                const panelElem = $xeIconPicker.$refs.refOptionPanel;
                if (!reactData.initialized) {
                    reactData.initialized = true;
                    if (btnTransfer) {
                        if (panelElem) {
                            document.body.appendChild(panelElem);
                        }
                    }
                }
                reactData.isActivated = true;
                reactData.isAniVisible = true;
                setTimeout(() => {
                    reactData.visiblePanel = true;
                }, 10);
                $xeIconPicker.updateZindex();
                $xeIconPicker.updatePlacement();
            }
        },
        hideOptionPanel() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            const internalData = $xeIconPicker.internalData;
            reactData.visiblePanel = false;
            internalData.hpTimeout = setTimeout(() => {
                reactData.isAniVisible = false;
            }, 350);
        },
        changeEvent(evnt, selectValue) {
            const $xeIconPicker = this;
            const props = $xeIconPicker;
            const reactData = $xeIconPicker.reactData;
            const $xeForm = $xeIconPicker.$xeForm;
            const formItemInfo = $xeIconPicker.formItemInfo;
            reactData.selectIcon = selectValue;
            if (selectValue !== props.value) {
                $xeIconPicker.emitModel(selectValue);
                $xeIconPicker.dispatchEvent('change', { value: selectValue }, evnt);
                // 自动更新校验状态
                if ($xeForm && formItemInfo) {
                    $xeForm.triggerItemEvent(evnt, formItemInfo.itemConfig.field, selectValue);
                }
            }
        },
        focusEvent() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            const isDisabled = $xeIconPicker.computeIsDisabled;
            if (!isDisabled) {
                if (!reactData.visiblePanel) {
                    $xeIconPicker.showOptionPanel();
                }
            }
        },
        blurEvent() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            reactData.isActivated = false;
        },
        clearValueEvent(evnt, selectValue) {
            const $xeIconPicker = this;
            $xeIconPicker.changeEvent(evnt, selectValue);
            $xeIconPicker.dispatchEvent('clear', { value: selectValue }, evnt);
        },
        clearEvent(params, evnt) {
            const $xeIconPicker = this;
            $xeIconPicker.clearValueEvent(evnt, null);
            $xeIconPicker.hideOptionPanel();
        },
        togglePanelEvent(evnt) {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            evnt.preventDefault();
            if (reactData.visiblePanel) {
                $xeIconPicker.hideOptionPanel();
            }
            else {
                $xeIconPicker.showOptionPanel();
            }
        },
        clickEvent(evnt) {
            const $xeIconPicker = this;
            $xeIconPicker.togglePanelEvent(evnt);
            $xeIconPicker.dispatchEvent('click', {}, evnt);
        },
        handleGlobalMousewheelEvent(evnt) {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            const { visiblePanel } = reactData;
            const isDisabled = $xeIconPicker.computeIsDisabled;
            if (!isDisabled) {
                if (visiblePanel) {
                    const panelElem = $xeIconPicker.$refs.refOptionPanel;
                    if (getEventTargetNode(evnt, panelElem).flag) {
                        $xeIconPicker.updatePlacement();
                    }
                    else {
                        $xeIconPicker.hideOptionPanel();
                    }
                }
            }
        },
        handleGlobalMousedownEvent(evnt) {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            const { visiblePanel } = reactData;
            const isDisabled = $xeIconPicker.computeIsDisabled;
            if (!isDisabled) {
                const el = $xeIconPicker.$refs.refElem;
                const panelElem = $xeIconPicker.$refs.refOptionPanel;
                reactData.isActivated = getEventTargetNode(evnt, el).flag || getEventTargetNode(evnt, panelElem).flag;
                if (visiblePanel && !reactData.isActivated) {
                    $xeIconPicker.hideOptionPanel();
                }
            }
        },
        handleGlobalKeydownEvent(evnt) {
            const $xeIconPicker = this;
            const props = $xeIconPicker;
            const reactData = $xeIconPicker.reactData;
            const { clearable } = props;
            const { visiblePanel } = reactData;
            const isDisabled = $xeIconPicker.computeIsDisabled;
            if (!isDisabled) {
                const isTab = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.TAB);
                const isEnter = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.ENTER);
                const isEsc = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.ESCAPE);
                const isUpArrow = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.ARROW_UP);
                const isDwArrow = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.ARROW_DOWN);
                const isDel = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.DELETE);
                const isSpacebar = globalEvents.hasKey(evnt, GLOBAL_EVENT_KEYS.SPACEBAR);
                if (isTab) {
                    reactData.isActivated = false;
                }
                if (visiblePanel) {
                    if (isEsc || isTab) {
                        $xeIconPicker.hideOptionPanel();
                    }
                    else if (isEnter) {
                        evnt.preventDefault();
                        evnt.stopPropagation();
                        // changeOptionEvent(evnt, currentValue, currentOption)
                    }
                    else if (isUpArrow || isDwArrow) {
                        evnt.preventDefault();
                        // let { firstOption, offsetOption } = findOffsetOption(currentValue, isUpArrow)
                        // if (!offsetOption && !findVisibleOption(currentValue)) {
                        //   offsetOption = firstOption
                        // }
                        // setCurrentOption(offsetOption)
                        // scrollToOption(offsetOption, isDwArrow)
                    }
                    else if (isSpacebar) {
                        evnt.preventDefault();
                    }
                }
                else if ((isUpArrow || isDwArrow || isEnter || isSpacebar) && reactData.isActivated) {
                    evnt.preventDefault();
                    $xeIconPicker.showOptionPanel();
                }
                if (reactData.isActivated) {
                    if (isDel && clearable) {
                        $xeIconPicker.clearValueEvent(evnt, null);
                    }
                }
            }
        },
        handleGlobalBlurEvent() {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            const { visiblePanel, isActivated } = reactData;
            if (visiblePanel) {
                $xeIconPicker.hideOptionPanel();
            }
            if (isActivated) {
                reactData.isActivated = false;
            }
            if (visiblePanel || isActivated) {
                const $input = $xeIconPicker.$refs.refInput;
                if ($input) {
                    $input.blur();
                }
            }
        },
        handleClickIconEvent(evnt, item) {
            const $xeIconPicker = this;
            const value = item.icon;
            $xeIconPicker.changeEvent(evnt, value);
            $xeIconPicker.hideOptionPanel();
        },
        //
        // Render
        //
        renderIconWrapper(h) {
            const $xeIconPicker = this;
            const props = $xeIconPicker;
            const { showIconTitle } = props;
            const iconGroupList = $xeIconPicker.computeIconGroupList;
            const isDisabled = $xeIconPicker.computeIsDisabled;
            return h('div', {
                class: 'vxe-ico-picker--list-wrapper'
            }, iconGroupList.map(list => {
                return h('div', {
                    class: 'vxe-ico-picker--list'
                }, list.map(item => {
                    const { iconRender } = item;
                    const compConf = iconRender ? renderer.get(iconRender.name) : null;
                    const oIconMethod = compConf ? compConf.renderIconPickerOptionIcon : null;
                    return h('div', {
                        class: 'vxe-ico-picker--item',
                        on: {
                            click(evnt) {
                                if (!isDisabled) {
                                    $xeIconPicker.handleClickIconEvent(evnt, item);
                                }
                            }
                        }
                    }, [
                        h('div', {
                            class: 'vxe-ico-picker--item-icon'
                        }, oIconMethod && iconRender
                            ? getSlotVNs(oIconMethod.call($xeIconPicker, h, iconRender, { $iconPicker: $xeIconPicker, option: item }))
                            : [
                                h('i', {
                                    class: item.icon || ''
                                })
                            ]),
                        showIconTitle
                            ? h('div', {
                                class: 'vxe-ico-picker--item-title'
                            }, `${item.title || ''}`)
                            : renderEmptyElement($xeIconPicker)
                    ]);
                }));
            }));
        },
        renderIconView(h) {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            const { selectIcon } = reactData;
            const selectIconItem = $xeIconPicker.computeSelectIconItem;
            if (selectIconItem) {
                const { iconRender } = selectIconItem;
                const compConf = iconRender ? renderer.get(iconRender.name) : null;
                const oIconMethod = compConf ? compConf.renderIconPickerOptionIcon : null;
                if (oIconMethod && iconRender) {
                    return h('div', {
                        key: 'inc',
                        class: 'vxe-ico-picker--icon'
                    }, getSlotVNs(oIconMethod.call($xeIconPicker, h, iconRender, { $iconPicker: $xeIconPicker, option: selectIconItem })));
                }
            }
            return h('div', {
                key: 'ind',
                class: 'vxe-ico-picker--icon'
            }, [
                h('i', {
                    class: selectIcon
                })
            ]);
        },
        renderVN(h) {
            const $xeIconPicker = this;
            const props = $xeIconPicker;
            const reactData = $xeIconPicker.reactData;
            const { className, popupClassName, clearable } = props;
            const { initialized, isActivated, isAniVisible, visiblePanel, selectIcon } = reactData;
            const vSize = $xeIconPicker.computeSize;
            const isDisabled = $xeIconPicker.computeIsDisabled;
            const btnTransfer = $xeIconPicker.computeBtnTransfer;
            const formReadonly = $xeIconPicker.computeFormReadonly;
            const inpPlaceholder = $xeIconPicker.computeInpPlaceholder;
            if (formReadonly) {
                return h('div', {
                    ref: 'refElem',
                    class: ['vxe-ico-picker--readonly', className]
                }, [
                    h('i', {
                        class: selectIcon
                    })
                ]);
            }
            return h('div', {
                ref: 'refElem',
                class: ['vxe-ico-picker', className ? (XEUtils.isFunction(className) ? className({ $iconPicker: $xeIconPicker }) : className) : '', {
                        [`size--${vSize}`]: vSize,
                        'show--clear': clearable && !isDisabled && !!selectIcon,
                        'is--visible': visiblePanel,
                        'is--disabled': isDisabled,
                        'is--active': isActivated
                    }]
            }, [
                h('div', {
                    class: 'vxe-ico-picker--inner',
                    on: {
                        click: $xeIconPicker.clickEvent
                    }
                }, [
                    h('input', {
                        ref: 'refInput',
                        class: 'vxe-ico-picker--input',
                        on: {
                            focus: $xeIconPicker.focusEvent,
                            blur: $xeIconPicker.blurEvent
                        }
                    }),
                    selectIcon
                        ? $xeIconPicker.renderIconView(h)
                        : h('div', {
                            class: 'vxe-ico-picker--placeholder'
                        }, inpPlaceholder),
                    h('div', {
                        class: 'vxe-ico-picker--suffix'
                    }, [
                        h('div', {
                            class: 'vxe-ico-picker--clear-icon',
                            on: {
                                click: $xeIconPicker.clearEvent
                            }
                        }, [
                            h('i', {
                                class: getIcon().INPUT_CLEAR
                            })
                        ]),
                        h('div', {
                            class: 'vxe-ico-picker--suffix-icon'
                        }, [
                            h('i', {
                                class: visiblePanel ? getIcon().ICON_PICKER_OPEN : getIcon().ICON_PICKER_CLOSE
                            })
                        ])
                    ])
                ]),
                h('div', {
                    ref: 'refOptionPanel',
                    class: ['vxe-table--ignore-clear vxe-ico-picker--panel', popupClassName ? (XEUtils.isFunction(popupClassName) ? popupClassName({ $iconPicker: $xeIconPicker }) : popupClassName) : '', {
                            [`size--${vSize}`]: vSize,
                            'is--transfer': btnTransfer,
                            'ani--leave': isAniVisible,
                            'ani--enter': visiblePanel
                        }],
                    attrs: {
                        placement: reactData.panelPlacement
                    },
                    style: reactData.panelStyle
                }, [
                    initialized && (visiblePanel || isAniVisible)
                        ? h('div', {
                            class: 'vxe-ico-picker--panel-wrapper'
                        }, [
                            $xeIconPicker.renderIconWrapper(h)
                        ])
                        : renderEmptyElement($xeIconPicker)
                ])
            ]);
        }
    },
    watch: {
        value(val) {
            const $xeIconPicker = this;
            const reactData = $xeIconPicker.reactData;
            reactData.selectIcon = `${val || ''}`;
        }
    },
    created() {
        const $xeIconPicker = this;
        const props = $xeIconPicker;
        const reactData = $xeIconPicker.reactData;
        reactData.selectIcon = `${props.value || ''}`;
        globalEvents.on($xeIconPicker, 'mousewheel', $xeIconPicker.handleGlobalMousewheelEvent);
        globalEvents.on($xeIconPicker, 'mousedown', $xeIconPicker.handleGlobalMousedownEvent);
        globalEvents.on($xeIconPicker, 'keydown', $xeIconPicker.handleGlobalKeydownEvent);
        globalEvents.on($xeIconPicker, 'blur', $xeIconPicker.handleGlobalBlurEvent);
    },
    beforeDestroy() {
        const $xeIconPicker = this;
        const panelElem = $xeIconPicker.$refs.refOptionPanel;
        if (panelElem && panelElem.parentNode) {
            panelElem.parentNode.removeChild(panelElem);
        }
        globalEvents.off($xeIconPicker, 'mousewheel');
        globalEvents.off($xeIconPicker, 'mousedown');
        globalEvents.off($xeIconPicker, 'keydown');
        globalEvents.off($xeIconPicker, 'blur');
    },
    render(h) {
        return this.renderVN(h);
    }
};