✨ Database kanban view https://github.com/siyuan-note/siyuan/issues/8873

Signed-off-by: Daniel <845765@qq.com>

kernel/av/layout_kanban.go

@@ -0,0 +1,149 @@
+// SiYuan - Refactor your thinking
+// Copyright (c) 2020-present, b3log.org
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package av
+
+import (
+	"github.com/88250/lute/ast"
+)
+
+// LayoutKanban 描述了看板视图的结构。
+type LayoutKanban struct {
+	*BaseLayout
+
+	GroupFields []*ViewKanbanField `json:"field"` // 字段
+}
+
+func NewLayoutKanban() *LayoutKanban {
+	return &LayoutKanban{
+		BaseLayout: &BaseLayout{
+			Spec:     0,
+			ID:       ast.NewNodeID(),
+			ShowIcon: true,
+		},
+	}
+}
+
+// ViewKanbanField 描述了看板字段的结构。
+type ViewKanbanField struct {
+	*BaseField
+}
+
+// Kanban 描述了看板视图实例的结构。
+type Kanban struct {
+	*BaseInstance
+
+	Fields    []*KanbanField `json:"fields"`   // 卡片字段
+	Cards     []*KanbanCard  `json:"cards"`    // 卡片
+	CardCount int            `json:"rowCount"` // 总卡片数
+}
+
+// KanbanCard 描述了看板实例卡片的结构。
+type KanbanCard struct {
+	ID     string              `json:"id"`     // 卡片 ID
+	Values []*KanbanFieldValue `json:"values"` // 卡片字段值
+}
+
+// KanbanField 描述了看板实例字段的结构。
+type KanbanField struct {
+	*BaseInstanceField
+}
+
+// KanbanFieldValue 描述了卡片字段实例值的结构。
+type KanbanFieldValue struct {
+	*BaseValue
+}
+
+func (card *KanbanCard) GetID() string {
+	return card.ID
+}
+
+func (card *KanbanCard) GetBlockValue() (ret *Value) {
+	for _, v := range card.Values {
+		if KeyTypeBlock == v.ValueType {
+			ret = v.Value
+			break
+		}
+	}
+	return
+}
+
+func (card *KanbanCard) GetValues() (ret []*Value) {
+	ret = []*Value{}
+	for _, v := range card.Values {
+		ret = append(ret, v.Value)
+	}
+	return
+}
+
+func (card *KanbanCard) GetValue(keyID string) (ret *Value) {
+	for _, value := range card.Values {
+		if nil != value.Value && keyID == value.Value.KeyID {
+			ret = value.Value
+			break
+		}
+	}
+	return
+}
+
+func (kanban *Kanban) GetItems() (ret []Item) {
+	ret = []Item{}
+	for _, card := range kanban.Cards {
+		ret = append(ret, card)
+	}
+	return
+}
+
+func (kanban *Kanban) SetItems(items []Item) {
+	kanban.Cards = []*KanbanCard{}
+	for _, item := range items {
+		kanban.Cards = append(kanban.Cards, item.(*KanbanCard))
+	}
+}
+
+func (kanban *Kanban) CountItems() int {
+	return len(kanban.Cards)
+}
+
+func (kanban *Kanban) GetFields() (ret []Field) {
+	ret = []Field{}
+	for _, field := range kanban.Fields {
+		ret = append(ret, field)
+	}
+	return ret
+}
+
+func (kanban *Kanban) GetField(id string) (ret Field, fieldIndex int) {
+	for i, field := range kanban.Fields {
+		if field.ID == id {
+			return field, i
+		}
+	}
+	return nil, -1
+}
+
+func (kanban *Kanban) GetValue(itemID, keyID string) (ret *Value) {
+	for _, card := range kanban.Cards {
+		if card.ID == itemID {
+			return card.GetValue(keyID)
+		}
+	}
+	return nil
+}
+
+func (kanban *Kanban) GetType() LayoutType {
+	return LayoutTypeKanban
+}