package rui import ( "fmt" "strings" ) // GridLayout - grid-container of View type GridLayout interface { ViewsContainer } type gridLayoutData struct { viewsContainerData } // NewGridLayout create new GridLayout object and return it func NewGridLayout(session Session, params Params) GridLayout { view := new(gridLayoutData) view.Init(session) setInitParams(view, params) return view } func newGridLayout(session Session) View { return NewGridLayout(session, nil) } // Init initialize fields of GridLayout by default values func (gridLayout *gridLayoutData) Init(session Session) { gridLayout.viewsContainerData.Init(session) gridLayout.tag = "GridLayout" gridLayout.systemClass = "ruiGridLayout" } func (style *viewStyle) setGridCellSize(tag string, value interface{}) bool { setValues := func(values []string) bool { count := len(values) if count > 1 { sizes := make([]interface{}, count) for i, val := range values { val = strings.Trim(val, " \t\n\r") if isConstantName(val) { sizes[i] = val } else if size, ok := StringToSizeUnit(val); ok { sizes[i] = size } else { invalidPropertyValue(tag, value) return false } } style.properties[tag] = sizes } else if isConstantName(values[0]) { style.properties[tag] = values[0] } else if size, ok := StringToSizeUnit(values[0]); ok { style.properties[tag] = size } else { invalidPropertyValue(tag, value) return false } return true } switch tag { case CellWidth, CellHeight: switch value := value.(type) { case SizeUnit, []SizeUnit: style.properties[tag] = value case string: if !setValues(strings.Split(value, ",")) { return false } case []string: if !setValues(value) { return false } case []DataValue: count := len(value) if count == 0 { invalidPropertyValue(tag, value) return false } values := make([]string, count) for i, val := range value { if val.IsObject() { invalidPropertyValue(tag, value) return false } values[i] = val.Value() } if !setValues(values) { return false } case []interface{}: count := len(value) if count == 0 { invalidPropertyValue(tag, value) return false } sizes := make([]interface{}, count) for i, val := range value { switch val := val.(type) { case SizeUnit: sizes[i] = val case string: if isConstantName(val) { sizes[i] = val } else if size, ok := StringToSizeUnit(val); ok { sizes[i] = size } else { invalidPropertyValue(tag, value) return false } default: invalidPropertyValue(tag, value) return false } } style.properties[tag] = sizes default: notCompatibleType(tag, value) return false } return true } return false } func (style *viewStyle) gridCellSizesCSS(tag string, session Session) string { switch cellSize := gridCellSizes(style, tag, session); len(cellSize) { case 0: case 1: if cellSize[0].Type != Auto { return `repeat(auto-fill, ` + cellSize[0].cssString(`auto`) + `)` } default: allAuto := true allEqual := true for i, size := range cellSize { if size.Type != Auto { allAuto = false } if i > 0 && !size.Equal(cellSize[0]) { allEqual = false } } if !allAuto { if allEqual { return fmt.Sprintf(`repeat(%d, %s)`, len(cellSize), cellSize[0].cssString(`auto`)) } buffer := allocStringBuilder() defer freeStringBuilder(buffer) for _, size := range cellSize { buffer.WriteRune(' ') buffer.WriteString(size.cssString(`auto`)) } return buffer.String() } } return "" } func (gridLayout *gridLayoutData) normalizeTag(tag string) string { tag = strings.ToLower(tag) switch tag { case VerticalAlign: return CellVerticalAlign case HorizontalAlign: return CellHorizontalAlign case "row-gap": return GridRowGap case ColumnGap: return GridColumnGap } return tag } func (gridLayout *gridLayoutData) Get(tag string) interface{} { return gridLayout.get(gridLayout.normalizeTag(tag)) } func (gridLayout *gridLayoutData) get(tag string) interface{} { if tag == Gap { rowGap := GetGridRowGap(gridLayout, "") columnGap := GetGridColumnGap(gridLayout, "") if rowGap.Equal(columnGap) { return rowGap } return AutoSize() } return gridLayout.viewsContainerData.get(tag) } func (gridLayout *gridLayoutData) Remove(tag string) { gridLayout.remove(gridLayout.normalizeTag(tag)) } func (gridLayout *gridLayoutData) remove(tag string) { if tag == Gap { gridLayout.remove(GridRowGap) gridLayout.remove(GridColumnGap) gridLayout.propertyChangedEvent(Gap) return } gridLayout.viewsContainerData.remove(tag) if gridLayout.created { switch tag { case CellWidth: updateCSSProperty(gridLayout.htmlID(), `grid-template-columns`, gridLayout.gridCellSizesCSS(CellWidth, gridLayout.session), gridLayout.session) case CellHeight: updateCSSProperty(gridLayout.htmlID(), `grid-template-rows`, gridLayout.gridCellSizesCSS(CellHeight, gridLayout.session), gridLayout.session) } } } func (gridLayout *gridLayoutData) Set(tag string, value interface{}) bool { return gridLayout.set(gridLayout.normalizeTag(tag), value) } func (gridLayout *gridLayoutData) set(tag string, value interface{}) bool { if value == nil { gridLayout.remove(tag) return true } if tag == Gap { if gridLayout.set(GridRowGap, value) && gridLayout.set(GridColumnGap, value) { gridLayout.propertyChangedEvent(Gap) return true } return false } if gridLayout.viewsContainerData.set(tag, value) { if gridLayout.created { switch tag { case CellWidth: updateCSSProperty(gridLayout.htmlID(), `grid-template-columns`, gridLayout.gridCellSizesCSS(CellWidth, gridLayout.session), gridLayout.session) case CellHeight: updateCSSProperty(gridLayout.htmlID(), `grid-template-rows`, gridLayout.gridCellSizesCSS(CellHeight, gridLayout.session), gridLayout.session) } } return true } return false } func gridCellSizes(properties Properties, tag string, session Session) []SizeUnit { if value := properties.Get(tag); value != nil { switch value := value.(type) { case []SizeUnit: return value case SizeUnit: return []SizeUnit{value} case []interface{}: result := make([]SizeUnit, len(value)) for i, val := range value { result[i] = AutoSize() switch val := val.(type) { case SizeUnit: result[i] = val case string: if text, ok := session.resolveConstants(val); ok { result[i], _ = StringToSizeUnit(text) } } } return result case string: if text, ok := session.resolveConstants(value); ok { values := strings.Split(text, ",") result := make([]SizeUnit, len(values)) for i, val := range values { result[i], _ = StringToSizeUnit(val) } return result } } } return []SizeUnit{} } /* func (gridLayout *gridLayoutData) cssStyle(self View, builder cssBuilder) { gridLayout.viewsContainerData.cssStyle(self, builder) } */ // GetCellVerticalAlign returns the vertical align of a GridLayout cell content: TopAlign (0), BottomAlign (1), CenterAlign (2), StretchAlign (3) // If the second argument (subviewID) is "" then a value from the first argument (view) is returned. func GetCellVerticalAlign(view View, subviewID string) int { if subviewID != "" { view = ViewByID(view, subviewID) } if view != nil { if align, ok := enumProperty(view, CellVerticalAlign, view.Session(), StretchAlign); ok { return align } } return StretchAlign } // GetCellHorizontalAlign returns the vertical align of a GridLayout cell content: LeftAlign (0), RightAlign (1), CenterAlign (2), StretchAlign (3) // If the second argument (subviewID) is "" then a value from the first argument (view) is returned. func GetCellHorizontalAlign(view View, subviewID string) int { if subviewID != "" { view = ViewByID(view, subviewID) } if view != nil { if align, ok := enumProperty(view, CellHorizontalAlign, view.Session(), StretchAlign); ok { return align } } return StretchAlign } // GetCellWidth returns the width of a GridLayout cell. If the result is an empty array, then the width is not set. // If the result is a single value array, then the width of all cell is equal. // If the second argument (subviewID) is "" then a value from the first argument (view) is returned. func GetCellWidth(view View, subviewID string) []SizeUnit { if subviewID != "" { view = ViewByID(view, subviewID) } if view != nil { return gridCellSizes(view, CellWidth, view.Session()) } return []SizeUnit{} } // GetCellHeight returns the height of a GridLayout cell. If the result is an empty array, then the height is not set. // If the result is a single value array, then the height of all cell is equal. // If the second argument (subviewID) is "" then a value from the first argument (view) is returned. func GetCellHeight(view View, subviewID string) []SizeUnit { if subviewID != "" { view = ViewByID(view, subviewID) } if view != nil { return gridCellSizes(view, CellHeight, view.Session()) } return []SizeUnit{} } // GetGridRowGap returns the gap between GridLayout rows. // If the second argument (subviewID) is "" then a value from the first argument (view) is returned. func GetGridRowGap(view View, subviewID string) SizeUnit { if subviewID != "" { view = ViewByID(view, subviewID) } if view != nil { if result, ok := sizeProperty(view, GridRowGap, view.Session()); ok { return result } } return AutoSize() } // GetGridColumnGap returns the gap between GridLayout columns. // If the second argument (subviewID) is "" then a value from the first argument (view) is returned. func GetGridColumnGap(view View, subviewID string) SizeUnit { if subviewID != "" { view = ViewByID(view, subviewID) } if view != nil { if result, ok := sizeProperty(view, GridColumnGap, view.Session()); ok { return result } } return AutoSize() }