feat(admin_menu): add announcement admin menu interface

Implement a custom GUI menu for administrators to send announcements with the following features:
- Support for announcement presets that auto-fill title and message fields
- Real-time character count validation with visual feedback
- Warning indicator when message exceeds max length limit
- Custom styled text input fields with placeholder text
- Rounded corners and custom color scheme matching announcement styling
- Close button and ESC key handling
- Network message handling to send announcements to server

lua/bladw_announcement/client/admin_menu/cl_menu.lua

@@ -0,0 +1,191 @@
+local rndx = include("lib/rndx.lua")
+local logo = Material("nocode/announcement/logo.png")
+
+BladW = BladW or {}
+BladW.Announcement = BladW.Announcement or {}
+
+-- mêmes couleurs que les annonces
+local COL_BG         = Color(0, 0, 0, 200)
+local COL_PANEL      = Color(0, 0, 0, 160)
+local COL_ACCENT     = Color(76, 119, 200)
+local COL_ACCENT_DIM = Color(60, 90, 150)
+local COL_TEXT       = Color(255, 255, 255)
+local COL_RED        = Color(255, 80, 80)
+local COL_GRAY       = Color(54, 54, 54, 255)
+local COL_MUTED      = Color(160, 160, 160)
+local COL_WARN       = Color(255, 200, 50)
+
+-- nb de caractères d'un champ (UTF-8, un accent = 1)
+local function EntryLen(entry)
+    local v = entry:GetValue()
+    return utf8.len(v) or #v
+end
+
+-- petit triangle warning dessiné à la main (comme ça pas besoin de font emoji)
+local function DrawWarning(x, y, size)
+    draw.NoTexture()
+    surface.SetDrawColor(COL_WARN)
+    surface.DrawPoly({
+        { x = x + size * 0.5, y = y },
+        { x = x + size,       y = y + size },
+        { x = x,              y = y + size },
+    })
+    draw.SimpleText("!", "DermaDefaultBold", x + size * 0.5, y + size * 0.62, Color(30, 30, 30), TEXT_ALIGN_CENTER, TEXT_ALIGN_CENTER)
+end
+
+-- mon style pour les champs de texte
+local function StyleEntry(entry, placeholder, default)
+    entry:SetFont("bladw_text_Medium")
+    entry:SetText(default or "")
+    entry:SetPlaceholderText(placeholder or "")
+    entry:SetTextColor(COL_TEXT)
+    entry:SetPaintBackground(false)
+    entry.Paint = function(self, w, h)
+        rndx.Draw(10, 0, 0, w, h, COL_PANEL, rndx.SHAPE_FIGMA)
+        local outline = self:IsEditing() and COL_ACCENT or Color(255, 255, 255, 60)
+        rndx.DrawOutlined(10, 0, 0, w, h, outline, 2, rndx.SHAPE_FIGMA)
+        self:DrawTextEntryText(COL_TEXT, COL_ACCENT, COL_TEXT)
+    end
+end
+
+local function OpenAAdminMenu()
+
+    -- si le menu est déjà ouvert je le vire
+    if IsValid(BladW_AdminMenu) then BladW_AdminMenu:Remove() end
+
+    local selectedPreset = ""
+    local maxLen = (BladW.Announcement.Conf or {}).announcement_max_length or 120
+
+    local frame = vgui.Create("DFrame")
+    BladW_AdminMenu = frame
+    frame:SetSize(500, 460)
+    frame:Center()
+    frame:SetTitle("")
+    frame:ShowCloseButton(false)
+    frame:MakePopup()
+
+    frame.Paint = function(self, w, h)
+        -- fond flou + sombre + contour blanc (comme la box d'annonce)
+        rndx.Draw(20, 0, 0, w, h, nil, rndx.SHAPE_FIGMA + rndx.BLUR)
+        rndx.Draw(20, 0, 0, w, h, COL_BG, rndx.SHAPE_FIGMA)
+        rndx.DrawOutlined(20, 0, 0, w, h, COL_TEXT, 3, rndx.SHAPE_FIGMA)
+
+        -- logo + titre
+        rndx.DrawMaterial(0, w * 0.5 - 30, 20, 60, 60, COL_TEXT, logo)
+        draw.SimpleText("Envoyer une annonce", "bladw_text", w * 0.5, 94, COL_TEXT, TEXT_ALIGN_CENTER, TEXT_ALIGN_CENTER)
+        draw.SimpleText("Presets", "bladw_text_Medium", 40, 118, COL_TEXT, TEXT_ALIGN_LEFT, TEXT_ALIGN_CENTER)
+    end
+
+    -- ESC ferme mon menu sans laisser le menu pause s'afficher.
+    -- le moteur ouvre le menu pause sur ESC avant que je puisse l'intercepter, donc je le recache direct et je ferme.
+    frame.Think = function(self)
+        if gui.IsGameUIVisible() then
+            gui.HideGameUI()
+            self:Remove()
+        end
+    end
+
+    -- bouton pour fermer
+    local close = vgui.Create("DButton", frame)
+    close:SetSize(30, 30)
+    close:SetPos(frame:GetWide() - 42, 14)
+    close:SetText("")
+    close.Paint = function(self, w, h)
+        rndx.Draw(8, 0, 0, w, h, self:IsHovered() and COL_RED or COL_GRAY, rndx.SHAPE_FIGMA)
+        draw.SimpleText("X", "bladw_text_Medium", w * 0.5, h * 0.5, COL_TEXT, TEXT_ALIGN_CENTER, TEXT_ALIGN_CENTER)
+    end
+    close.DoClick = function() frame:Remove() end
+
+    -- les champs (créés avant les boutons preset pour être captés dans leurs closures)
+    local titleEntry = vgui.Create("DTextEntry", frame)
+    titleEntry:SetPos(40, 240)
+    titleEntry:SetSize(420, 40)
+    StyleEntry(titleEntry, "Titre de l'annonce", "Annonce")
+
+    local msgEntry = vgui.Create("DTextEntry", frame)
+    msgEntry:SetPos(40, 288)
+    msgEntry:SetSize(420, 40)
+    StyleEntry(msgEntry, "Message de l'annonce")
+    -- bord rouge quand ça dépasse la limite
+    msgEntry.Paint = function(self, w, h)
+        local over = EntryLen(self) > maxLen
+        rndx.Draw(10, 0, 0, w, h, COL_PANEL, rndx.SHAPE_FIGMA)
+        local outline = over and COL_RED or (self:IsEditing() and COL_ACCENT or Color(255, 255, 255, 60))
+        rndx.DrawOutlined(10, 0, 0, w, h, outline, over and 3 or 2, rndx.SHAPE_FIGMA)
+        self:DrawTextEntryText(COL_TEXT, COL_ACCENT, COL_TEXT)
+    end
+
+    -- ligne du bas : warning à gauche, compteur à droite
+    local status = vgui.Create("DPanel", frame)
+    status:SetPos(40, 332)
+    status:SetSize(420, 26)
+    status:SetPaintBackground(false)
+    status.Paint = function(self, w, h)
+        local len  = EntryLen(msgEntry)
+        local over = len > maxLen
+
+        if over then
+            DrawWarning(0, h * 0.5 - 8, 16)
+            draw.SimpleText("Trop de caractères", "bladw_text_Medium", 24, h * 0.5, COL_RED, TEXT_ALIGN_LEFT, TEXT_ALIGN_CENTER)
+        end
+
+        draw.SimpleText(len .. " / " .. maxLen, "bladw_text_Medium", w, h * 0.5,
+            over and COL_RED or COL_MUTED, TEXT_ALIGN_RIGHT, TEXT_ALIGN_CENTER)
+    end
+
+    -- boutons preset : remplissent les champs et retiennent le preset choisi
+    local presets = vgui.Create("DIconLayout", frame)
+    presets:SetPos(40, 134)
+    presets:SetSize(420, 90)
+    presets:SetSpaceX(8)
+    presets:SetSpaceY(8)
+
+    for key, preset in SortedPairs(BladW.Announcement.Presets or {}) do
+        local b = presets:Add("DButton")
+        b:SetSize(134, 34)
+        b:SetText("")
+        b.Paint = function(self, w, h)
+            local on = (selectedPreset == key) or self:IsHovered()
+            rndx.Draw(8, 0, 0, w, h, on and COL_ACCENT or COL_GRAY, rndx.SHAPE_FIGMA)
+            draw.SimpleText(preset.title or key, "bladw_text_Medium", w * 0.5, h * 0.5, COL_TEXT, TEXT_ALIGN_CENTER, TEXT_ALIGN_CENTER)
+        end
+        b.DoClick = function()
+            selectedPreset = key
+            titleEntry:SetText(preset.title or "")
+            msgEntry:SetText(preset.text or "")
+        end
+    end
+
+    -- bouton envoyer (grisé + bloqué si ça dépasse)
+    local send = vgui.Create("DButton", frame)
+    send:SetPos(40, 372)
+    send:SetSize(420, 50)
+    send:SetText("")
+    send.Paint = function(self, w, h)
+        local over = EntryLen(msgEntry) > maxLen
+        local col  = over and COL_GRAY or (self:IsHovered() and COL_ACCENT or COL_ACCENT_DIM)
+        rndx.Draw(12, 0, 0, w, h, col, rndx.SHAPE_FIGMA)
+        draw.SimpleText("Envoyer", "bladw_text", w * 0.5, h * 0.5, over and COL_MUTED or COL_TEXT, TEXT_ALIGN_CENTER, TEXT_ALIGN_CENTER)
+    end
+    send.DoClick = function()
+        if EntryLen(msgEntry) > maxLen then
+            surface.PlaySound("buttons/button10.wav")
+            return
+        end
+        if msgEntry:GetValue() == "" and selectedPreset == "" then
+            surface.PlaySound("buttons/button10.wav")
+            return
+        end
+
+        net.Start("bladWSendAnnouncement")
+            net.WriteString(selectedPreset)
+            net.WriteString(titleEntry:GetValue())
+            net.WriteString(msgEntry:GetValue())
+        net.SendToServer()
+
+        frame:Remove()
+    end
+
+end
+
+return OpenAAdminMenu