135 lines
4.1 KiB
Nim
135 lines
4.1 KiB
Nim
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import vdom, karax, karaxdsl, jdict, jstrutils
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type
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Filter = enum
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all, active, completed
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var
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entries: seq[(cstring, bool)]
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selectedEntry = -1
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filter: Filter
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proc onTodoEnter(ev: Event; n: VNode) =
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entries.add((n.value, false))
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n.value = ""
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proc removeHandler(ev: Event; n: VNode) =
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let id = suffixAsInt(n.id, "remove:")
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entries[id] = (cstring(nil), false)
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proc editHandler(ev: Event; n: VNode) =
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let id = suffixAsInt(n.id, "edit:")
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selectedEntry = id
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when defined(usecache):
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var entryCache = newJDict[int, VNode]()
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proc focusLost(ev: Event; n: VNode) = selectedEntry = -1
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proc editEntry(ev: Event; n: VNode) =
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let id = suffixAsInt(n.id, "todo-edit:")
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entries[id][0] = n.value
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selectedEntry = -1
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proc toggleEntry(ev: Event; n: VNode) =
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let id = suffixAsInt(n.id, "toggle:")
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entries[id][1] = not entries[id][1]
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proc onAllDone(ev: Event; n: VNode) =
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entries = @[]
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selectedEntry = -1
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proc clearCompleted(ev: Event, n: VNode) =
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for i in 0..<entries.len:
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if entries[i][1]: entries[i][0] = nil
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proc toClass(completed: bool): cstring =
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(if completed: cstring"completed" else: cstring"")
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proc toVis(visible: bool): cstring =
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(if visible: cstring"visible" else: "hidden")
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proc toChecked(checked: bool): cstring =
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(if checked: cstring"checked" else: cstring(nil))
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proc selected(v: Filter): cstring =
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(if filter == v: cstring"selected" else: cstring(nil))
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proc createEntry(id: int; d: cstring; completed, selected: bool): VNode =
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# implement caching:
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when defined(usecache):
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if entryCache.contains(i):
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let old = entryCache[i]
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return old
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result = buildHtml(tr):
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li(class=toClass(completed)):
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if not selected:
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tdiv(class = "view"):
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input(class = "toggle", `type` = "checkbox", checked = toChecked(completed),
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onclick=toggleEntry, id="toggle:" & &id)
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label(onDblClick=editHandler, id="edit:" & &id):
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text d
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button(class = "destroy", id="remove:" & $id, onclick=removeHandler)
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else:
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input(class = "edit", name = "title", id = "todo-edit:" & &id,
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onfocusLost = focusLost,
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onenter = editEntry, value = d)
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when defined(usecache):
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entryCache[i] = result
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proc createDom(): VNode =
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result = buildHtml(tdiv(class="todomvc-wrapper")):
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section(class = "todoapp"):
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header(class = "header"):
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h1:
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text "todos"
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input(class = "new-todo", placeholder="What needs to be done?", name = "newTodo",
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onenter = onTodoEnter)
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section(class = "main"):
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input(class = "toggle-all", `type` = "checkbox", name = "toggle")
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label(`for` = "toggle-all", onclick = onAllDone):
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text "Mark all as complete"
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var entriesCount = 0
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var completedCount = 0
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ul(class = "todo-list"):
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for i, d in pairs(entries):
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if d[0] != nil:
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let b = case filter
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of all: true
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of active: not d[1]
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of completed: d[1]
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if b:
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createEntry(i, d[0], d[1], i == selectedEntry)
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inc completedCount, ord(d[1])
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inc entriesCount
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footer(class = "footer"):
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span(class = "todo-count"):
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strong:
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text(&entriesCount)
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text cstring" item" & &(if entriesCount != 1: "s left" else: " left")
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ul(class = "filters"):
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li:
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anchor(class = selected(all), href = "#/"):
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text "All"
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li:
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anchor(class = selected(active), href = "#/active"):
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text "Active"
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li:
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anchor(class = selected(completed), href = "#/completed"):
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text "Completed"
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button(class = "clear-completed", onclick = clearCompleted):
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text "Clear completed (" & &completedCount & ")"
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setOnHashChange(proc(hash: cstring) =
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if hash == cstring"#/": filter = all
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elif hash == cstring"#/completed": filter = completed
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elif hash == cstring"#/active": filter = active
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)
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setRenderer createDom
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proc onload(session: cstring) {.exportc.} =
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for i in 0..1: # 0_000:
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entries.add((cstring"Entry " & &i, false))
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init()
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