refactor: add frontend.hover.load function to set buffer content

lua/Trans/frontend/hover/load.lua

@@ -0,0 +1,121 @@
+local node = require('Trans').util.node
+local it, t, f = node.item, node.text, node.format
+
+
+local function conjunction(text)
+    return {
+        it('', 'TransTitleRound'),
+        it(text, 'TransTitle'),
+        it('', 'TransTitleRound'),
+    }
+end
+
+local interval = (' '):rep(4)
+
+local strategy = {
+    title = function(hover, title)
+        if type(title) == 'string' then
+            hover.buffer:setline(it(title, 'TransTitle'))
+            return
+        end
+
+        local icon = hover.opts.icon
+
+
+        local word     = title.word
+        local oxford   = title.oxford
+        local collins  = title.collins
+        local phonetic = title.phonetic
+
+
+        if not phonetic and not collins and not oxford then
+            hover.buffer:setline(it(word, 'TransWord'))
+        else
+            hover.buffer:setline(f {
+                width = hover.width,
+                text = t {
+                    it(word, 'TransWord'),
+                    t {
+                        it('['),
+                        it((phonetic and phonetic ~= '') and phonetic or icon.notfound, 'TransPhonetic'),
+                        it(']')
+                    },
+
+                    it(collins and icon.star:rep(collins) or icon.notfound, 'TransCollins'),
+                    it(oxford == 1 and icon.yes or icon.no)
+                },
+            })
+        end
+    end,
+    tag = function(hover, tag)
+        local buffer = hover.buffer
+        buffer:setline(conjunction('标签'))
+
+        local size = #tag
+
+        for i = 1, size, 3 do
+            buffer:setline(
+                it(
+                    interval .. tag[i] ..
+                    (tag[i + 1] and interval .. tag[i + 1] ..
+                    (tag[i + 2] and interval .. tag[i + 2] or '') or ''),
+                    'TransTag'
+                )
+            )
+        end
+
+        buffer:setline('')
+    end,
+    exchange = function(hover, exchange)
+        local buffer = hover.buffer
+        buffer:setline(conjunction('词形变化'))
+
+        for description, value in pairs(exchange) do
+            buffer:setline(
+                it(interval .. description .. interval .. value, 'TransExchange')
+            )
+        end
+
+        buffer:setline('')
+    end,
+    pos = function(hover, pos)
+        local buffer = hover.buffer
+        buffer:setline(conjunction('词性'))
+
+        for description, value in pairs(pos) do
+            buffer:setline(
+                it(interval .. description .. interval .. value, 'TransPos')
+            )
+        end
+
+        buffer:setline('')
+    end,
+    translation = function(hover, translation)
+        local buffer = hover.buffer
+        buffer:setline(conjunction('中文翻译'))
+
+        for _, value in ipairs(translation) do
+            buffer:setline(
+                it(interval .. value, 'TransTranslation')
+            )
+        end
+
+        buffer:setline('')
+    end,
+    definition = function(hover, definition)
+        local buffer = hover.buffer
+        buffer:setline(conjunction('英文注释'))
+
+        for _, value in ipairs(definition) do
+            buffer:setline(
+                it(interval .. value, 'TransDefinition')
+            )
+        end
+
+        buffer:setline('')
+    end,
+}
+
+return function(hover, result, field)
+    strategy[field](hover, result[field])
+end