package main
+import (
+ "github.com/zyedidia/clipboard"
+)
+
// The Cursor struct stores the location of the cursor in the view
// The complicated part about the cursor is storing its location.
// The cursor must be displayed at an x, y location, but since the buffer
// This is used for line and word selection where it is necessary
// to know what the original selection was
OrigSelection [2]Loc
+
+ // Which cursor index is this (for multiple cursors)
+ Num int
}
-// Goto puts the cursor at the given cursor's location and gives the current cursor its selection too
+// Goto puts the cursor at the given cursor's location and gives
+// the current cursor its selection too
func (c *Cursor) Goto(b Cursor) {
c.X, c.Y, c.LastVisualX = b.X, b.Y, b.LastVisualX
c.OrigSelection, c.CurSelection = b.OrigSelection, b.CurSelection
}
+// GotoLoc puts the cursor at the given cursor's location and gives
+// the current cursor its selection too
+func (c *Cursor) GotoLoc(l Loc) {
+ c.X, c.Y = l.X, l.Y
+ c.LastVisualX = c.GetVisualX()
+}
+
+// CopySelection copies the user's selection to either "primary"
+// or "clipboard"
+func (c *Cursor) CopySelection(target string) {
+ if c.HasSelection() {
+ if target != "primary" || c.buf.Settings["useprimary"].(bool) {
+ clipboard.WriteAll(c.GetSelection(), target)
+ }
+ }
+}
+
// ResetSelection resets the user's selection
func (c *Cursor) ResetSelection() {
c.CurSelection[0] = c.buf.Start()
c.CurSelection[1] = c.buf.Start()
}
+// SetSelectionStart sets the start of the selection
+func (c *Cursor) SetSelectionStart(pos Loc) {
+ c.CurSelection[0] = pos
+}
+
+// SetSelectionEnd sets the end of the selection
+func (c *Cursor) SetSelectionEnd(pos Loc) {
+ c.CurSelection[1] = pos
+}
+
// HasSelection returns whether or not the user has selected anything
func (c *Cursor) HasSelection() bool {
return c.CurSelection[0] != c.CurSelection[1]
if c.CurSelection[0].GreaterThan(c.CurSelection[1]) {
c.buf.Remove(c.CurSelection[1], c.CurSelection[0])
c.Loc = c.CurSelection[1]
- } else if c.GetSelection() == "" {
+ } else if !c.HasSelection() {
return
} else {
c.buf.Remove(c.CurSelection[0], c.CurSelection[1])
// GetSelection returns the cursor's selection
func (c *Cursor) GetSelection() string {
- if c.CurSelection[0].GreaterThan(c.CurSelection[1]) {
- return c.buf.Substr(c.CurSelection[1], c.CurSelection[0])
+ if InBounds(c.CurSelection[0], c.buf) && InBounds(c.CurSelection[1], c.buf) {
+ if c.CurSelection[0].GreaterThan(c.CurSelection[1]) {
+ return c.buf.Substr(c.CurSelection[1], c.CurSelection[0])
+ }
+ return c.buf.Substr(c.CurSelection[0], c.CurSelection[1])
}
- return c.buf.Substr(c.CurSelection[0], c.CurSelection[1])
+ return ""
}
// SelectLine selects the current line
func (c *Cursor) SelectLine() {
c.Start()
- c.CurSelection[0] = c.Loc
+ c.SetSelectionStart(c.Loc)
c.End()
if c.buf.NumLines-1 > c.Y {
- c.CurSelection[1] = c.Loc.Move(1, c.buf)
+ c.SetSelectionEnd(c.Loc.Move(1, c.buf))
} else {
- c.CurSelection[1] = c.Loc
+ c.SetSelectionEnd(c.Loc)
}
c.OrigSelection = c.CurSelection
func (c *Cursor) AddLineToSelection() {
if c.Loc.LessThan(c.OrigSelection[0]) {
c.Start()
- c.CurSelection[0] = c.Loc
- c.CurSelection[1] = c.OrigSelection[1]
+ c.SetSelectionStart(c.Loc)
+ c.SetSelectionEnd(c.OrigSelection[1])
}
if c.Loc.GreaterThan(c.OrigSelection[1]) {
c.End()
- c.CurSelection[1] = c.Loc.Move(1, c.buf)
- c.CurSelection[0] = c.OrigSelection[0]
+ c.SetSelectionEnd(c.Loc.Move(1, c.buf))
+ c.SetSelectionStart(c.OrigSelection[0])
}
if c.Loc.LessThan(c.OrigSelection[1]) && c.Loc.GreaterThan(c.OrigSelection[0]) {
}
if !IsWordChar(string(c.RuneUnder(c.X))) {
- c.CurSelection[0] = c.Loc
- c.CurSelection[1] = c.Loc.Move(1, c.buf)
+ c.SetSelectionStart(c.Loc)
+ c.SetSelectionEnd(c.Loc.Move(1, c.buf))
c.OrigSelection = c.CurSelection
return
}
backward--
}
- c.CurSelection[0] = Loc{backward, c.Y}
+ c.SetSelectionStart(Loc{backward, c.Y})
c.OrigSelection[0] = c.CurSelection[0]
for forward < Count(c.buf.Line(c.Y))-1 && IsWordChar(string(c.RuneUnder(forward+1))) {
forward++
}
- c.CurSelection[1] = Loc{forward, c.Y}.Move(1, c.buf)
+ c.SetSelectionEnd(Loc{forward, c.Y}.Move(1, c.buf))
c.OrigSelection[1] = c.CurSelection[1]
c.Loc = c.CurSelection[1]
}
-// AddWordToSelection adds the word the cursor is currently on to the selection
+// AddWordToSelection adds the word the cursor is currently on
+// to the selection
func (c *Cursor) AddWordToSelection() {
if c.Loc.GreaterThan(c.OrigSelection[0]) && c.Loc.LessThan(c.OrigSelection[1]) {
c.CurSelection = c.OrigSelection
backward--
}
- c.CurSelection[0] = Loc{backward, c.Y}
- c.CurSelection[1] = c.OrigSelection[1]
+ c.SetSelectionStart(Loc{backward, c.Y})
+ c.SetSelectionEnd(c.OrigSelection[1])
}
if c.Loc.GreaterThan(c.OrigSelection[1]) {
forward++
}
- c.CurSelection[1] = Loc{forward, c.Y}.Move(1, c.buf)
- c.CurSelection[0] = c.OrigSelection[0]
+ c.SetSelectionEnd(Loc{forward, c.Y}.Move(1, c.buf))
+ c.SetSelectionStart(c.OrigSelection[0])
}
c.Loc = c.CurSelection[1]
}
-// SelectTo selects from the current cursor location to the given location
+// SelectTo selects from the current cursor location to the given
+// location
func (c *Cursor) SelectTo(loc Loc) {
if loc.GreaterThan(c.OrigSelection[0]) {
- c.CurSelection[0] = c.OrigSelection[0]
- c.CurSelection[1] = loc
+ c.SetSelectionStart(c.OrigSelection[0])
+ c.SetSelectionEnd(loc)
} else {
- c.CurSelection[0] = loc
- c.CurSelection[1] = c.OrigSelection[0]
+ c.SetSelectionStart(loc)
+ c.SetSelectionEnd(c.OrigSelection[0])
}
}
proposedY := c.Y - amount
if proposedY < 0 {
proposedY = 0
+ c.LastVisualX = 0
} else if proposedY >= c.buf.NumLines {
proposedY = c.buf.NumLines - 1
}
- if proposedY == c.Y {
- return
- }
- c.Y = proposedY
runes := []rune(c.buf.Line(c.Y))
- c.X = c.GetCharPosInLine(c.Y, c.LastVisualX)
- if c.X > len(runes) {
+ c.X = c.GetCharPosInLine(proposedY, c.LastVisualX)
+
+ if c.X > len(runes) || (amount < 0 && proposedY == c.Y) {
c.X = len(runes)
}
+
+ c.Y = proposedY
}
// DownN moves the cursor down N lines (if possible)
c.DownN(1)
}
-// Left moves the cursor left one cell (if possible) or to the last line if it is at the beginning
+// Left moves the cursor left one cell (if possible) or to
+// the previous line if it is at the beginning
func (c *Cursor) Left() {
if c.Loc == c.buf.Start() {
return
c.LastVisualX = c.GetVisualX()
}
-// Right moves the cursor right one cell (if possible) or to the next line if it is at the end
+// Right moves the cursor right one cell (if possible) or
+// to the next line if it is at the end
func (c *Cursor) Right() {
if c.Loc == c.buf.End() {
return
c.LastVisualX = c.GetVisualX()
}
-// GetCharPosInLine gets the char position of a visual x y coordinate (this is necessary because tabs are 1 char but 4 visual spaces)
+// StartOfText moves the cursor to the first non-whitespace rune of
+// the line it is on
+func (c *Cursor) StartOfText() {
+ c.Start()
+ for IsWhitespace(c.RuneUnder(c.X)) {
+ if c.X == Count(c.buf.Line(c.Y)) {
+ break
+ }
+ c.Right()
+ }
+}
+
+// GetCharPosInLine gets the char position of a visual x y
+// coordinate (this is necessary because tabs are 1 char but
+// 4 visual spaces)
func (c *Cursor) GetCharPosInLine(lineNum, visualPos int) int {
// Get the tab size
tabSize := int(c.buf.Settings["tabsize"].(float64))
func (c *Cursor) GetVisualX() int {
runes := []rune(c.buf.Line(c.Y))
tabSize := int(c.buf.Settings["tabsize"].(float64))
+ if c.X > len(runes) {
+ c.X = len(runes) - 1
+ }
+
+ if c.X < 0 {
+ c.X = 0
+ }
+
return StringWidth(string(runes[:c.X]), tabSize)
}
-// Relocate makes sure that the cursor is inside the bounds of the buffer
-// If it isn't, it moves it to be within the buffer's lines
+// StoreVisualX stores the current visual x value in the cursor
+func (c *Cursor) StoreVisualX() {
+ c.LastVisualX = c.GetVisualX()
+}
+
+// Relocate makes sure that the cursor is inside the bounds
+// of the buffer If it isn't, it moves it to be within the
+// buffer's lines
func (c *Cursor) Relocate() {
if c.Y < 0 {
c.Y = 0
projects / micro.git / blobdiff